The minimum frequency of photon required to break a particle of mass 15.348 amu into $$4\alpha$$ particles is ____ kHz.
[mass of He nucleus$$=4.002amu, 1 amu=1.66\times10^{-27}kg,h=6.6\times10^{-34}J.s $$ and $$ c=3\times10^{8}m/s$$]

A

$$9\times10^{19}$$

B

$$14.94\times10^{19}$$

C

$$14.94\times10^{20}$$

D

$$9\times10^{20}$$