`V_(V),V_(R ),V_(G)` are the velocities of violet, red and green lights respectively, passing through a prism after dispersion of white light. Which among the following is a correct relation ?
A. `V_(V)=V_(R )=V_(G)`
B. `V_(V)lt V_(G)=V_(R )`
C. `V_(V) gt V_(R ) gt V_(G)`
D. `V_(V) lt V_(R ) =V_(G)`