What Is the Frequency (S^{- 1}) of a Photon That

Multiple Choice

What is the frequency (s^{- 1}) of a photon that has an energy of 4.38 × 10^{- 18}J?

A) 1.45 × 10^{- 16}
B) 2.30 × 10⁷
C) 1.31 × 10^{- 9}
D) 6.61 × 10¹⁵
E) 436