Assume $DS=4500H,SS=2000H,Bx=2100H,SI=1480,DI=8500,BP=7814H,Ax=2512H.$ What are the physical addresses and contents after executing the following instructions:

a$)$ MOV $[Bx]+20,Ax$

b$)$ MOV $[$SI$+10],$ AX

c$)$ MOV $4[DI],$ AX

d$)$ MOV$[BP]+12,Ax$