In the following question, a matrix of certain characters is given. These characters follow a certain trend, row-wise or column-wise. Find out this trend and choose the missing character accordingly.
(I). A, B, C, D, E and F are six members of a family. (II). One couple has parents and their children in the family. (III). A is the son of C and E is the daughter of A. (IV). D is the daughter of F who is the mother of E.
Who are the male members in the family ?