Express the number in scientific notation. 63,600,000
A6.36 x 10^7
B6.36 x 10^-7
C63.6 x 10^6
D636 x 10^5
A6.36 x 10^7
B6.36 x 10^-7
C63.6 x 10^6
D636 x 10^5