Write the Number 0 $5.4 \times 10 ^ { - 8 }$

Write the number 0.000054 in scientific notation.

A) $5.4 \times 10 ^ { - 8 }$
B) $5.4 \times 10 ^ { - 4 }$
C) $5.4 \times 10 ^ { - 5 }$
D) $5.4 \times 10 ^ { - 6 }$
E) $5.4 \times 10 ^ { - 7 }$