The threshold frequency for a certain photosensitive metal is v₀. When it is illuminated by light of frequency v=2v₀, the maximum velocity of photoelectrons is v₀. What will be the maximum velocity of the photoelectrons when the same metal is illuminated by light of frequency v=5v₀?
A. √2v₀
B. 2v₀
C. 2√2v₀
D. 4v₀