Read the following statements carefully and answer the question given below.
1. A3B means A is the wife of B.
2. A4B means A is the brother of B.
3. A5B means A is the father of B.
4. A9B means A is the sister of B.
Which of the following means F is the mother of K?
AF9M4N3K
BF5M3K
CF3M5K
DF3M5N3K
what is correct answer