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Consider the instruction ADD DOG,AX in which the contents of the AX register and memory cell DOG are added together and the results are stored

Consider the instruction ADD DOG,AX
in which the contents of the AX register and memory cell DOG are added together and the results are stored in DOG. Choose the correct sequence of circuits which will correctly implement this instruction. TMP below is a temporary register.
Question 4 options:
1.)
IP->MAR
MEM(MAR)-> MDR
MDR->IR
AX -> TMP
TMP+BX-> TMP
TMP -> AX
IP +2-> IP
2.)
IP->MAR
MEM(MAR)-> MDR
MDR->IR
ADDR(IR)->MAR
MEM(MAR)->MDR
MDR+AX->MDR
IP +2-> IP
3.)
IP->MAR
MEM(MAR)-> MDR
MDR->IR
ADDR(IR)->MAR
MEM(MAR)->MDR
MDR+AX->AX
IP +2-> IP
4.)
IP->MAR
MEM(MAR)-> MDR
MDR->IR
ADDR(IR)->MAR
MEM(MAR)->MDR
MDR+AX->MDR
MDR->MEM(MAR)
IP +2-> IP

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