13, 26, 18, 36, 28, 56, ?
Choose the correct answer:	A) 43	B) 25	C) 58	D) 47	E) 48
48   48   This is an alternating multiplication and subtracting series with a pattern x2, -8, x2, -8.
<result>E</result>
13, 26, 18, 36, 28, 56, ?