I need some help regarding solving a logic. The question is to find an equivalent to the following logic.
$$(P \lor Q) \land (P \to R) \land (Q \to S)$$
The choices are
(a) $S \land R$
(b) $S \to R$
(c) $S \lor R$
(d) none of these
The answer given in the book is (c) $S \lor R$ . I tried many ways, but unable to bring the solution. So, kindly explain me the steps. Thanks in advance.