Select the figure that will come in place of the question mark (?) in the given series.
If 'K × L' means 'K is the son of L',
'K + L' means 'K is the daughter of L',
'K ÷ L' means 'K is the sister of L',
'K - L' means 'K is the wife of L'.
In the expression 'M ÷ N × O - P', what is the relationship of P to M?