Explanation with the solution will be helpful, thanks!

For each sequence of instructions given below, answer the following ques- tions: (a) Is there a data hazard? If yes, identify the set of instructions that cause the data hazard; (b) Is it possible to execute the sequence in the pipelined datapath with forwarding shown in Figure 1 without forcing a stal? If not, state the number of cycles an instruction wil need to be stalled before the data hazard is resolved Sequence (A) add $s0, $s1, $s2 sw $s0, 4($s1) add $s1, $s0, $s1 Sequence (B) lw $s1, 0(Ss2) or $s0, $s1, $s2 sw $s0, 4($s0)