Let A1, A2 .... , Am be non-empty subsets of {1,2,3,..... ,100} satisfying the following conditions:
(1) the numbers |A1|, |A2|,... , |Am| are distinct;
(2) A1, A2 , ... , Am are pairwise disjoint. (Here |A| denotes the number of elements in the set A.) Then the maximum possible value of m is
(A) 13
(B) 14
(C) 15
(D) 16
