The compound propositions p and q are called logically equivalent if _

1.	The compound propositions p and q are called logically equivalent if ________ is a tautology.
A.	p ‚Äö√Ñ√∂‚àö√∫‚àö√Ü q
B.	p ‚Äö√Ñ√∂‚àö√∫‚àö‚â† q
C.	¬¨¬®¬¨¬Æ (p ‚Äö√Ñ√∂‚àö‚Ä†¬¨√Ü q)
D.	¬¨¬®¬¨¬Æp ‚Äö√Ñ√∂‚àö‚Ä†¬¨√Ü ¬¨¬®¬¨¬Æq
Answer» B. p ‚Äö√Ñ√∂‚àö√∫‚àö‚â† q

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