Use indirect truth tables to determine whether the following argument is valid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
E ⊃ F
G ⊃ ~F / ~G ∨ ~E
(A)Valid (B)Invalid. Counterexample when E, F, and G are true (C)Invalid. Counterexample when E and G are true and F is false (D)Invalid. Counterexample when F and G are true and E is false
A