28, 26, 21, 19, 14, 12, ?  Options:
A) 3	B) 2	C) 8	D) 7	E) 5
This is a simple alternating subtraction series, with a pattern -2, -5, -2, -5 ....   Answer : 7.
<result>D</result>
28, 26, 21, 19, 14, 12, ?