Once a contradiction is allowed it is possible to prove that
A) any statement is false.
B) any statement is true.
C) no statements are true.
D) no tautologies are possible.

Question

Quizplus · Accepted Answer

Allowing a contradiction means that any statement can simultaneously be both true and false. Therefore, any statement can be proven true by assuming its contradiction to be false, and vice versa.

Once a Contradiction Is Allowed It Is Possible to Prove