There are six members K, L, M, N, O and P in a family. Answer the following questions based on the following information.

1. K and L are the most senior couple.

2. O and P are children of the banker.

3. P is the granddaughter of a retired person.

4. N, who is the daughter of L, is married to a banker.

5. K is the mother-in-law of M.