A rectangular metal plate shown in the adjacent figure has a charge of $$420\,\mu\text{C}$$ uniformly distributed over it. How much charge is present over the shaded area? No part of the metal plate is cut. The circles and diagonal are shown for clarity only. Take $$\pi=\frac{22}{7}$$.

A

$$45\,\mu\text{C}$$

B

$$450\,\mu\text{C}$$

C

$$15\,\mu\text{C}$$

D

$$150\,\mu\text{C}$$