In a certain code language,
'A + B' means 'A is the mother of B',
'A - B' means 'A is the brother of B',
'A × B' means 'A is the wife of B' and
'A ÷ B' means 'A is the father of B'.
Based on the above, how is M related to O if 'K ÷ L × M - N + O'?
AWife's father
BMother's brother
CMother's husband
DDaughter's husband
