The Speed of Light in a Vacuum Is 300,000,000 M/s $\times$

Multiple Choice

The speed of light in a vacuum is 300,000,000 m/s. Represented in powers-of-10 notation, this is

A) 30 $\times$ 10⁸m/s.
B) 3 $\times$ 10⁷m/s.
C) 30 $\times$ 10⁶m/s.
D) 3 $\times$ 10⁸m/s.