An insect of negligible mass is sitting on a block of mass M, tied with a spring of force constant K. The block performs simple harmonic motion vertically with amplitude A in front of a mirror which is inclined at $$60^\circ$$ with the vertical as shown. The maximum speed of insect relative to its image will be

A

$$2A\sqrt{\frac{K}{M}}$$

B

$$A\sqrt{\frac{3K}{M}}$$

C

$$A\sqrt{\frac{K}{M}}$$

D

zero