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17. Consider the following instruction sequence in a single-issue in-order 5-stage pipeline (IF, ID, EX, MEM,
and WB).
Opcode Destination Source1 Source2
ADD R1 R2 R3 First instruction to enter the pipeline
SUB R2 R3 R1
MUL R1 R2 R3 Last instruction to enter the pipeline
How many data hazards does the ID stage need to detect for this instruction sequence?
(A) 1 (B) 2 (C) 3 (D) 4 (E) 5
