What Happens in the Process of Fluorescence

What happens in the process of fluorescence?

A) water molecules are broken up into hydrogen and oxygen
B) atoms absorb ultraviolet rays and convert them to visible light as their electrons cascade to lower energy levels
C) hydrogen is transformed into helium where gas is very, very hot
D) radio waves are given off as molecules change their vibration or rotation
E) fluorine gas is released by chemical reactions in the outer layer of a star