Mr. Wong predicted that he would sell 45 automobiles. He actually sold 48 automobiles. What are the values of a and b in the table below?

Percent Error

Item
Approximate value
Exact value
Error
Absolute error
Ratio
Percent error
Automobiles
45
48

a
b

A. a = Negative StartFraction 3 over 45 EndFraction; b = negative 6.8 percent
B. a = Negative StartFraction 3 over 48 EndFraction; b = negative 6.25 percent
C. a = StartFraction 3 over 48 EndFraction; b = 6.25 percent
D. a = StartFraction 3 over 45 EndFraction; b = 6.8 percent