14, 28, 20, 40, 32, 64, ?	Choices.
A) 43 B) 25 C) 58 D) 47 E) 56
56   56   This is an alternating multiplication and subtracting series with a pattern x2, -8, x2, -8.
<result>E</result>
14, 28, 20, 40, 32, 64, ?