4. Pipelines For the five stage MIPS pipeline with full bypass and stall logic discussed in class, explain the hazard in each of the following sequences (if any), and how to resolve it. a. lw $t1, 42(St1) add $t2, $t3, $t3 sub $t4, $t1, $t2 lw $t1, 42(St1) add $t4, $t2, $t3 sub $t4, $t2, $t3 add $t1, $t2, $t3 add $t1, $t1, $t1 beq $t1, $t4, L1 lw $t1, 42(St1) add $t3, $t2, $t3 sub $t4, $t1, $t3