( 2^71 + 2^72 + 2^73 + 2^74 ) is divided by :

Answer: Option B

$$\begin{array}{rl}& \iff \left(2^{71}+2^{72}+2^{73}+2^{74}\right)\\ & =2^{71}\left(2^0+2^1+2^2+2^3\right)\\ & =2^{71}(1+2+4+8)\\ & =2^{71}\times 15\\ & =2^{70}\times 30\\ & \text{It is divisible by 10}\end{array}$$