P, Q, R and S are four statements. Relation between these statements is as follows :
IIf P is true, then Q must be true.
IIIf Q is true, then R must be true.
IIIIf S is true, then either Q is false or R is false.
Which of the following must be true?

Question

P, Q, R and S are four statements. Relation between these statements is as follows :

Which of the following must be true?

Accepted Answer

Option A: If P is true, then S is false