A Naturally Occurring Element Consists of Three Isotopes

A naturally occurring element consists of three isotopes. The data for the isotopes are:
Isotope 1: 147.9554 u, 10.563%
Isotope 2: 150.9496 u, 70.811%
Isotope 3: 152.9461 u, 18.626% What is the average atomic mass of this naturally occurring element?

A) 50.335 u
B) 150.62 u
C) 150.67 u
D) 151.01 u
E) 151.08 u