i want answer with explaination

Qiverfing 8 When executing a LOOP instruction A. index registers ESt, EDI are automatically incremented. B. the ECX register is decremented. C. the ECX register is incremented. D. values of CPU registers are not changed, ANSWER: Quicsilan. 9. What will be value of Al register after execution of the following instructions? db 1,0,5,3,6 mov edi, 2 mov ecx, 2 mov al,0 d: add al, t[edi] add edi, 2 loop d ANSWER (decimal value)