Use a Truth Table to Answer the Following Question $$\frac { Z \equiv A } { Z \supset A }$$

Multiple Choice

Use a truth table to answer the following question.Which, if any, set of truth values assigned to the atomic sentences shows that the following argument is invalid? $$\frac { Z \equiv A } { Z \supset A }$$

A) Z: T A: T
B) Z: T A: F
C) Z: F A: T
D) Z: F A: F
E) None-the argument is valid.