In a certain code language,
A = B means ‘A is the father of B’
A + B means ‘A is the sister of B’
A @ B means ‘A is the wife of B’
Based on the above, how is N related to M, if N @ K = L + T = U + M ?
1
Paternal aunt
2
Maternal aunt
3
Paternal grandmother
4
Maternal grandmother