Let \( \Delta, \nabla \in\{\wedge, \vee\} \) be such that \( p \nabla q \Rightarrow((p \Delta q)...
Let \( \Delta, \nabla \in\{\wedge, \vee\} \) be such that \( p \nabla q \Rightarrow((p \Delta q) \nabla r) \) is a tautology. Then \( (p \nabla q) \Delta \mathrm{r} \) is logically equivalent to:
(a) \( (p \Delta r) \vee \mathrm{q} \)
(b) \( (p \Delta r) \wedge q \)
(c) \( (p \wedge r) \Delta q \)
(d) \( (p \nabla r) \wedge q \)
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