A

\[32\sqrt{3}\;u^2\]

B

\[\frac{35}{2}\sqrt{3}\;u^2\]

C

\[\frac{45}{2}\sqrt{3}\;u^2\]

D

\[45\sqrt{3}\;u^2\]

E

\[\frac{27}{2}\sqrt{3}\;u^2\]