In a certain code language,
A * B means ‘A is the brother of B’
A ? B means ‘A is the father of B’
A : B means ‘A is the son of B’
A = B means ‘ A is the wife of B’
Based on the above, how is M related to E if 'M : A = R * K ? E’?
AFather's sister's sister
BFather's mother's son
CFather's brother's son
DFather's son's brother