Following question is based on the information provided below -
(I) 'A × B' means 'A is mother of B'.
(II) 'A - B' means 'A is brother of B'.
(III) 'A + B' means 'A is sister of B'.
(IV) 'A ÷ B' means 'A is father of B'.
How is K related to M in R ÷ M - K?
1
Son
2
K is either brother or sister of M
3
Daughter
4
Nephew