When saving and restoring registers with PUSH and POP, which of the following is a mistakes?

Group of answer choices

The operand order is the same between PUSH and POP, as in:

push eax

push ebx

$...($some other code$)$

pop eax

pop ebx

The operand order is reversed in POP, as in:

push eax

push ebx

$...($some other code$)$

pop ebx

pop eax

Both PUSH and its corresponding POP occur within the same loop.

All of these are wrong because you cannot push and pop registers.