Determine Whether the Given Formula Is a Logical Truth of M

Multiple Choice

determine whether the given formula is a logical truth of M or not. If it is not a logical truth, select a false valuation.
-[(∃x) Ex • (∃x) ∼Ex) ] ⊃ (∀x) (Ex $\lor$ ∼Ex)

A) Logical truth
B) Not a logical truth. False valuation in a domain of 2 members, in which: Ea: True
Ea: False
C) Not a logical truth. False valuation in a domain of 2 members, in which: Ea: True
Ea: True
D) Not a logical truth. False valuation in a domain of 2 members, in which: Ea: False
Ea: False
E) Not a logical truth. False valuation in a domain of 2 members, in which: Ea: False
Ea: True