Need help fast

MULTIPLE CHOICE (5 questions x 3 points each = 15 points) CIRCLE YOUR ANSWER BELOW (right side of the page) Q1: Under which of the following situations does the pipeline need to stall? a. Iw St0, 0(Sp) add $to, $t1, $t2 b. lw $to, 0($sp) add $t2, $t1, Sto c. sw $to, 0(Ssp) lw $to, 0($sp) d. sw $to, 0(Ssp) add $to, $t1, $t2 Q2: How many clock cycles does it take to execute the following instructions? Assume the fllowing instructions are running in the MIPS pipeline add $to, $t1, $t2 add $t1, $t2, $t3 sw $t0, 0($sp) addi $t1, $t2, 5 lw $to, 0($sp) addi $t1, $t2, 5 a. 10 b. 8 c. 6 d. 4 e