Consider the following MIPS assembly program running in a $5-$stage pipeline processor

and answer the following questions:

Inst. # MIPS Assembly code

$1.$ Add $t$3,$ $t$4,$ $t$6$

$2.$ Lw $t$2,40($$t$3)$

$3.$ Sub $t$5,$ $t$3,$ $t$2$

$4.$ Lw $t$7,120($$t$5)$

$5.$ Add $t$8,$ $t$7,$ $t$2$