Solve the Problem $5 \times 10^{14}$ Cubic Meters and the Volume of a Bacterium Is

Multiple Choice

Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.
-Assume that the volume of the earth is $5 \times 10^{14}$ cubic meters and the volume of a bacterium is $2.5 \times 10^{-16}$ cubic meters. If the earth could be filled with bacteria, how many would it contain?

A) $2.0 \times 10^{30}$ bacteria
B) $2.0 \times 10^{-30}$ bacteria
C) $5.0 \times 10^{31}$ bacteria
D) $5.0 \times 10^{-31}$ bacteria