when the light of frequency 2 $$\nu_{0}$$ ( where $$\nu_{0}$$ is threshhold frequency), is incident on a metal plate ,the maximum velocity of electrons emitted is $$v_{1}$$.when the frequency of the incident radiation is increased to 5 $$\nu_{0}$$, the maximum velocity of electrons emitted from the same plate is $$V_{2}$$.The ratio of $$V_{1}$$ to $$V_{2}$$ is

A

2:1

B

4:1

C

1:4

D

1:2