Use a Truth Table to Answer the Following Question $$\frac { B \cdot F } { B \equiv F }$$

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? $$\frac { B \cdot F } { B \equiv F }$$

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