The following question pertains to the given information:
1. $A+B$ means $A$ is the mother of $B$.
2. $A-B$ means $A$ is the sister of $B$.
3. $A\times B$ means $A$ is the father of $B$.
4. $A÷B$ means $A$ is the brother of $B$.

[Note: The question text contains a typo in statement 4 where 'A B B' is written, which conventionally stands for division ($÷$) in this standard problem set].

Which of the following indicates that "N is the maternal uncle of M" ?

1. A
   QBMBN*P
2. B
   NBP-L+E-M
3. C
   QNM+P
4. D
   P+NMQ