Write the Number in Scientific Notation $9,500,000,000,000$ Kilometers $95 \times 10 ^ { 11 }$

Multiple Choice

Write the number in scientific notation.
-A light-year is a measure of length defined as the distance that light travels in one year, which is about $9,500,000,000,000$ kilometers. Write this number in scientific notation.

A) $95 \times 10 ^ { 11 }$
B) $0.95 \times 10 ^ { - 11 }$
C) $9.5 \times 10 ^ { - 12 }$
D) $9.5 \times 10 ^ { 12 }$