$\text{A} \times \text{B}$ means $\text{A}$ is the sister of $\text{B, A + B}$ means $\text{A}$ is the daughter of $\text{B, A-B}$ means $\text{A}$ is the son of $\text{B}$. On the basis of the information, you have to tell, how is $\text{P}$ related to $\text{S}$ in the relationship $\text{P-Q} \times \text{R+S}?$
- Brother
- Son
- Grandson
- Daughter's son