The following question pertains to the given information:\n1. $A+B$ means $A$ is the mother of $B$.\n2. $A-B$ means $A$ is the sister of $B$.\n3. $A\times B$ means $A$ is the father of $B$.\n4. $A\beta B$ means $A$ is the brother of $B$.\n\nWhich of the following indicates that "N is the maternal uncle of M"?

1. A
   $N\beta P-L+E-M$
2. B
   $Q\times N\times M+P$
3. C
   $P+N\times M\times Q$
4. D
   $Q\beta M\beta N\times P$