The maximum range of a monostatic Radar is R. If a target having a Radar cross section of $$10m^{2}$$ exists at $$\frac{R}{2}$$ what should be the target cross-section at $$\frac{3R}{2}$$ to result in an equalsignal strength at the Radar?

A

90 $$m^{2}$$

B

270 W/m$$^2$$

C

810 $$m^2$$

D

30 W/m$$^2$$