Assinale a opção que apresenta o produto interno entre os vetores u with rightwards arrow on top equals open parentheses 5 comma negative 2 comma 0 close parentheses space e space v with rightwards arrow on top equals open parentheses negative 1 comma 1 comma 6 close parentheses colon a. u with rightwards arrow on top bullet v with rightwards arrow on top equals 7 b. u with rightwards arrow on top bullet v with rightwards arrow on top equals 9 c. u with rightwards arrow on top bullet v with rightwards arrow on top equals negative 9 d. u with rightwards arrow on top bullet v with rightwards arrow on top equals 1 e. u with rightwards arrow on top bullet v with rightwards arrow on top equals negative 7