Select the answer choice that best implements the following expression. Do not permit dword1, ECX, or EDX to be modified:

eax = -dword1 + (edx - ecx) + 1

A.

neg dword1 mov ebx,edx sub ebx,ecx add eax,ebx inc eax B.

mov eax,dword1 neg eax sub edx,ecx add eax,edx inc eax C,

mov eax,dword1 mov edx,ebx sub ebx,ecx add eax,ebx inc eax D.

mov eax,dword1 neg eax mov ebx,edx sub ebx,ecx add eax,ebx inc eax Please answer and explain the answer, thank you.