Of the \(50\) researchers in a workgroup, \(40\) percent will be assigned to Team \(A\) and the remaining \(60\) percent

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Of the \(50\) researchers in a workgroup, \(40\) percent will be assigned to Team \(A\) and the remaining \(60\) percent to Team \(B.\) However, \(70\) percent of the researchers prefer Team \(A\) and \(30\) percent prefer Team \(B.\) What is the lowest possible number of researchers who will NOT be assigned to the team they prefer?

(A) 15
(B) 17
(C) 20
(D) 25
(E) 30

Answer: A

Source: GMAT Prep