Momentum of electromagnetic radiation

2015 AIPMT-I 1 question

1. 1 Electromagnetic Waves Easy
   A radiation of energy 'E' falls normally on a perfectly reflecting surface. The momentum transferred to the surface is (C = velocity of light):
   A $\frac{E}{C}$ B $\frac{2E}{C}$ C $\frac{2E}{C^2}$ D $\frac{E}{C^2}$
   Check Answer