Wavelength of light emitted depends directly on:

Question

A The quantity of energy absorbed by an electron.
B The specific element the electron belongs to.
C The quantity of energy released by an electron.
D All of the above

D?

Answer 1

It is a very bad question, but as written, D is the likely choice.

Answer 2

I agree with both answers; i.e., it is badly written and D is the likely choice.