Problem Solving (PS) | A certain musical piece is to be played by an equal number of violinis

A certain musical piece is to be played by an equal number of violinists and cellists. If there are 6 violinists and 2 cellists available to play the piece, how many different groups of musicians could be selected to play the piece?

(A) 12
(B) 15
(C) 27
(D) 28
(E) 70

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