Calculate the execution time of the following code, assuming a clock frequency of $2$GHz$.($Assume the worst$-$case scenario of the code, i$.$e$.$ that all lines of the code are executed$)$

addi $t$1,$$$0,1$

$$ and $t$4,$$t$1,$$t$3$

$$ sub$$ $t$0,$$t$4,$$t$4$

$$ add$$ $t$9,$$t$0,$$t$1$

$$ xor $t$8,$$t$9,$$$0$

$$ beq$$ $t$4,$$$0,$jump

$$ addi $t$0,$$t$0,1$

jump:

$$ sub $t$5,$$t$3,$$t$1$

Select one:

a$.10$ ns

b$.11\mathrm{.}5$

c$.7$ ns

d$.9$ ns

e$.11$ ns

f$.6\mathrm{.}5$ ns

g$.6$ ns

h$.7\mathrm{.}5$ ns

$$i$.9\mathrm{.}5$ ns

j$.10\mathrm{.}5$ ns

k$.8$ ns

l$.8\mathrm{.}5$ns