A wedding decorator receives two sets of light bulbs- \(A\) and \(B.\) Set \(A\) consists of \(100\) light bulbs of which \(20\) percent are defective and set \(B\) consists of \(80\) light bulbs of which \(50\) percent are defective. If the light bulbs from the two sets are mixed, what is the minimum percentage of light bulbs the decorator needs to take out to make sure that the remaining light bulbs are non-defective?

A. \(25\%\)
B. \(30\%\)
C. \(34\%\)
D. \(40\%\)
E. \(45\%\)

Answer: C

Source: e-GMAT