Task: Question Answering
Input (English): Question: Each of three charities in Novel Grove Estates has 8 persons serving on its board of directors. If exactly 4 persons serve on 3 boards each and each pair of charities has 5 persons in common on their boards of directors, then how many distinct persons serve on one or more boards of directors?
A.
B.
C.
D.
E.

 Option A: 8

 Option B: 13

 Option C: 16

 Option D: 24

 Option E: 27
Output (English): Option B