Write the Number in Scientific Notation $4.5 \times 10 ^ { 3 }$

Multiple Choice

Write the number in scientific notation.
-4500 million

A) $4.5 \times 10 ^ { 3 }$
B) $4.5 \times 10 ^ { 10 }$
C) $45 \times 10 ^ { 8 }$
D) $4.5 \times 10 ^ { 9 }$