question_answer

\['P+Q'\] means 'P is brother of \[Q';'P-Q'\] means 'P is sister of Q'. Which of the following means 'M is maternal uncle of R'?

A)  \[M-R+K\]                    

B)  \[M+K-R~~~~~~~\]

C)  \[M\text{ }+\text{ }K\text{ }\times \text{ }Q\]    

D)       No symbol