Consider the following data path diagram. Consider an instruction: R0 ← R1 + R2. The following steps are used to execute it over the given data path. Assume that PC is incremented appropriately. The subscripts r and w indicate read and write operations, respectively.1. R2r, TEMP1f, ALUadd, TEMP2w2. R1r, TEMP1w3. PCr, MARw, MEMr4. TEMP2r, R0w5. MDRr, IRwWhich one of the following is the correct order of execution of the above steps?

Consider the following data path diagram. Consider an instruction: R0

1.	Consider the following data path diagram. Consider an instruction: R0 ← R1 + R2. The following steps are used to execute it over the given data path. Assume that PC is incremented appropriately. The subscripts r and w indicate read and write operations, respectively.1. R2r, TEMP1f, ALUadd, TEMP2w2. R1r, TEMP1w3. PCr, MARw, MEMr4. TEMP2r, R0w5. MDRr, IRwWhich one of the following is the correct order of execution of the above steps?
A.	2, 1, 4, 5, 3
B.	1, 2, 4, 3, 5
C.	3, 5, 2, 1, 4
D.	3, 5, 1, 2, 4
Answer» D. 3, 5, 1, 2, 4

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