Which one of the following is true?

AIf 'p' and 'q' are true then p⊃q is false

BIf 'p' and 'q' are false then ∼(p·∼q) is true

CIf 'p' is true and 'q' is false then p·∼q is false

DIf 'p' is false and 'q' is true then p⊃q is false

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