Answer and Explanation:
The biconditional statement “p if and only if q,” denoted p ⇔ q, is true when both p and q carry the same truth value, and is false otherwise. It is sometimes abbreviated as “p iff q”. The biconditional operator is denoted by a double-headed arrow. The biconditional pq represents "p if and only if q," where p is a hypothesis and q is a conclusion.