PASCAL 1998 Problem 9

[system]

What is one-half of 1.2\times10^{30}?

Answer Choices
A. 6.0\times10^{30}
B. 6.0\times10^{29}
C. 0.6\times5^{30}
D. 1.2\times10^{15}
E. 1.2\times5^{30}