$$A \times B$$ means ‘A is the wife of B’;
$$A \div B$$ means ‘A is the father of B’.
Which of the following expression means 'R' is the paternal grandfather of 'S'?

A

$$J \times S \div R \times U$$

B

$$R \div J \div S \times U$$

C

$$S \times U \times R \div J$$

D

$$S \div U \times J \div R$$