Stella predicted that she would sell 56 sculptures. She actually sold 30 sculptures. What are the values of a and b in the table below? Round to the nearest tenth if necessary. Percent Error

Item: Sculptures
Approximate value 56
Exact value 30
Error
Absolute error
Ratio: a
Percent error : b

answer choices :
(A)a = StartFraction 26 over 56 EndFraction; b = 46.4 percent
(B)a = StartFraction 30 over 56 EndFraction; b = 53.6 percent
(C)a = StartFraction 26 over 30 EndFraction; b = 86.7 percent
(D)a = StartFraction 26 over 26 EndFraction; b = 100 percent