Hertz's Running a Sale and Budget's Lowering Rates Are a Necessary

Multiple Choice

Hertz's running a sale and Budget's lowering rates are a necessary condition for either Avis's buying new cars or Thrifty's laying off workers.

A) (A • T) ⊃ (H ∨ B)
B) (H • B) ⊃ (A ∨ T)
C) (H • B) ∨ (A ∨ T)
D) (A ∨ T) ⊃ (H • B)
E) (H • B) ≡ (A ∨ T)