17th qs.

In a certain society, there are two marriage
groups, red and
brown. No marriage is permitted within a group. On
marriage, males
become part of their wives groups; women remain in
their own group.
Children belong to the same group as their parents.
Widowers and
divorced males revert to the group of their birth.
Marriage to more
than one person at the same time and marriage to a
direct descendant
are forbidden
Q1. A brown female could have had
I. A grandfather born Red
II. A grandmother born Red
III Two grandfathers born Brown
(A) I only
(B) III only
(C) I, II and III
(D) I and II only
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