Astronomical distances are often expressed in light-years, which is the maximum distance light can travel in a year's time. If the speed of light in a vacuum is
m/sec, how many miles are in a light-year? There are 1.61 kilometers in a mile.
A
1.86×1051.86\times 10^{5}1.86×10
5

B
4.45×1064.45\times 10^{6}4.45×10
6

C
2.43×10112.43\times 10^{11}2.43×10
11

D
5.84×10125.84\times 10^{12}5.84×10
12