Given that $SS=2400H,SP=8631H,$ and $Ax=4FA6HH,$ and $Dx=C_{3FHH},$

What is the physical address of the memory location pointed by the stack pointer, SP after the execution of the following lines of instructions?

PUSH AX

PUSH DX

POP AX

POP DX

a$.$ AA$310H$

b$.C_{631H}$

c$.86310H$

d$.88710H$