If Robert drove \(a\) miles in \(b\) hours, which of the following represents his average speed, in miles per hour?
A. \(\dfrac{a}{b}\)
B. \(\dfrac{b}{a}\)
C. \(\dfrac{1}{ab}\)
D. \(ab\)
E. \(a^2b\)
The OA is A
A
B
C
D
E