n assembly line has been designed to make battery$-$powered beverage mixers. Task details are shown in the table below:

Station

Task Assigned

Task Time $($minutes$)$

$1$

$1$

$3\mathrm{.}0$

$2$

$3$; $4$

$1\mathrm{.}5$; $2\mathrm{.}0$

$3$

$2$; $5$; $6$

$1\mathrm{.}5$; $1\mathrm{.}5$; $1\mathrm{.}0$

$4$

$7$

$3\mathrm{.}0$

$5$

$8$

$2\mathrm{.}5$

$6$

$9$; $10$; $11$

$2\mathrm{.}0$; $1\mathrm{.}0$; $1\mathrm{.}0$

What is the assembly line's efficiency?

A$.$

$100\%$

B$.$

$92\mathrm{.}2\%$

C$.$

$87\mathrm{.}3\%$

D$.$

$83\mathrm{.}3\%$

E$.$

$97\mathrm{.}0\%$