Subject: mathqa
Question: 6 persons in an organization including x and y were to be divided in two groups of 3 members each . the total number of groups containing both x and y is what fraction of the total number of groups which can be formed ?
Option: 
A: 3 / 10
B: 1 / 4
C: 1 / 70
D: 3 / 14
Answer: A