Study the diagram, where the secant segment AP

intersects the circle at points A
and B,
and the secant segment CP
intersects the circle at points C
and D.
The lines intersect outside the circle at point P.

A circle, with no center shown, as described in the text. Segment A B equals X minus 8, B P equals 6, C D equals X minus 5, and D P equals 5. What is the length of AP¯¯¯¯¯¯¯¯?
Responses

17
17

10
10

12
12

14
14

16