Pretoria, South Africa - Thamsanqa Jantjie (34) was accused of masquering as sign-language interpreter during Nelson Mandela 's memorial servisse, he stood beside President Obama and other global dignitaries and gesticulated in gibberish, told interviewers that he was a violence-prone schizophrenic and had seen angels descending in the stadium where the event was held. The assertions by the man added anothe bizarre turn to a story that has raised questions about the security at the memorial ceremony, and spread a pall of distraction and embarassament over one of South Africa 's most solemn moments. With Mr. Mandela lying in state here for a second day as thousands waited in line to pay their final respects, the government found itself unable to explain Mr. Jantjie's selection for the job, admitted it had paid a bargain rate for his services and asserted that the company that supplied him had vanished into thin air.
At the national memorial for Mr. Mandela, Mr. Jantjie stood close to center-stage on the podium, clad in a dark suit, with a blue security lanyard bearing the words "state funeral" around his neck, gesticulating in what was supposed to be sign language for the deaf. The audience in the 93.000-seat stadium and hundreds of millions of television viewers around the world followed the event and his part in it.
However, as a procession of leaders from Mr. Obama to Ban K-Moon, the United Nations secretary general, to President Jacob G. Zuma of South Africa delivered their eulogies, Mr. Jantje's mind was turmoil with visions and hallucinations, he said on Thrusday. What happened that day, I see angels come to the stadium, " he told the Associated Press. Later on he defended himself: "I think that I've been a Champion of sign language, "he said, describing himself as "a patient receiving treatment in schizophrenia." "However, there was no immediate medical corroboration that Mr. Jantjie was schizophrenic. (Adapted from the article written by NICHOLAS KULISH, JOHN ELIGON and ALAN COWELL for the New York Times)

1) According to the text, which of the alternatives below is correct ?
A) Doctors have attested that Mr. Jantje is schizophrenic.
B) Mr. Jantje's confusing performance caused turmoil during memorial, many people panicked and the situation became dangerous.
C) It is nuclear how Mr. Jantje got the job as na interpreter.
D) Mr. Jantje apologized for not providing a professional interpreter servisse regarding sign language.