What is the maximum percentage error in the calculated quantity (x) in an experiment where the quantities a, b, c are measured, and x is calculated from the formula x = (ab^2) / c^3? If the maximum percentage errors in a, b, and c are 1%, 2%, and 3% respectively, what is the maximum percentage error in x?

A) 6%
B) 7%
C) 8%
D) 9%