Select the answer choice that best implements the following expression. Do not permit dword$1,$ ECX, or EDX to be modified:

For reference, NEG EAX will replace the value in EAX with its two's complement $($e$.$g$.14$d becomes $-14$d$,$ or $-20$d becomes $20$d$).$

eax $=-$dword$1+($edx $-$ ecx$)+1$