assembly language question, which one is the correction answer?

1: data 2: str1 BYTE "AAX",0 3: str2 BYTE 10 DUP(OFFh) 4: .code 5 mov edi,0 6: L1: mov al,[str1+edi] 7: cmp al,0 8: je L2 9 mov [str2+edi],al 10: inc edi 11: jmp L1 12: L2: In the above code, if we changed lines 7, 8, and 9 to the following, what value would be stored at offset [str2+4] after the loop finished? 7: mov [str2+edi],al 8 cmp al,0 9: je L2