Given the following MIPS assembly like code:

Li R$8,8$

L: $,$ LW R$2,$ R$3,$ R$7$

Add R$1,$ R$2,$ R$3$

Sub R$7,$ R$1,$ R$3$

LW R$4,10($R$7)$

SWR$4,20($R$1)$

Subi R$8,$ R$8,4$

BNEQZ R$8,$ L

Also, given the following latencies for each stage:

IF: $80$ns$,$ ID: $30$ ns$,$ EX: $50$ ns$,$ MEM: $85n,$ and WB: $35$ ns

What is the average CPI when running this code on Multi$-$cycle MIPS CPU with the above latencies?

A$.4\mathrm{.}133$

B$.$ None of the answers

C$.4\mathrm{.}125$

D$.4,40$

E$.4\mathrm{.}00$