Q53

MCQ2 marks, −0.67

Which one of the following propositional logic formulas is TRUE when exactly two of $p,q$ and $r$ are TRUE?

(A)

$(( p \leftrightarrow q) \wedge r) \vee (p \wedge q \wedge \sim r)$

(B)

$( \sim (p \leftrightarrow q) \wedge r)\vee (p \wedge q \wedge \sim r)$

(C)

$( (p \to q) \wedge r) \vee (p \wedge q \wedge \sim r)$

(D)

$(\sim (p \leftrightarrow q) \wedge r) \wedge (p \wedge q \wedge \sim r)$

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