1.If qqq is false and p∧q⇔rp \land q \Leftrightarrow rp∧q⇔r is true, then which one of the following statements is a tautology?a.(p∨r)→(p∧r)(p \lor r) \rightarrow (p \land r)(p∨r)→(p∧r)b.(p∧r)→(p∨r)(p \land r) \rightarrow (p \lor r)(p∧r)→(p∨r)c.p∧rp \land rp∧rd.p∨rp \lor rp∨rLogin to continueOnly logged in users canattempt or see the solution.
