In a coded relation, if P × Q means P is the mother of Q, P ÷ Q means P is the son of Q, and P + Q means P is the daughter of Q, what is the relationship of R to S if R × S and S ÷ R are true?
Answer: A. R is S's mother
R is the mother of S, and S is the son of R, confirming that R is S's mother.