Blood Relation

Q.If A + B means A is the father of B; A – B means A is the brother B; A % B means A is the wife of B and A x B means A is the mother of B, which of the following shows that M is the maternal grandmother of T? A. M x N % S + T B. M x N – S % T C. M x S – N % T D. M x N x S % T….???
Kindly please provide solution ASAP.