Among the Uses of the Yellow-Orange Pigment Carotene Is/are

Among the uses of the yellow-orange pigment carotene is/are
A: Providing coloration to the skin
B: Acting as a precursor to Vitamin A
C: Reducing the number of potentially dangerous molecules formed during metabolic activity
D: Improving immune cell number
E: Improving immune cell activity

A) A,C,D,E
B) A,B,C,E
C) B,C,E
D) C,D,E
E) A,B,C,D,E