What number should replace the question mark?
16, 23, 19, 22, 15, 25, ?  Options
A) 10	B) 18	C) 11	D) 22	E) 26
11   11   There are two alternate sequences: +3 and -4.
<result>C</result>
What number should replace the question mark?
16, 23, 19, 22, 15, 25, ?