The Energy (J) Required for an Electronic Transition in a Bohr

The energy (J) required for an electronic transition in a Bohr hydrogen atom from n = 2 to n = 3 is (J)

A) 3.0 × 10^{- 19}
B) - 3.0 × 10^{- 19}
C) - 7.9 × 10^{- 19}
D) 4.6 × 10¹⁴
E) 4.0 × 10^{- 19}