Southwest Expands Routes If Either American Does Not Hire Pilots

Multiple Choice

Southwest expands routes if either American does not hire pilots or United does not lower fares.

A) ∼(A ∨ U) ⊃ S
B) (∼A • ∼U) ⊃ S
C) S ⊃ (∼A ∨ ∼U)
D) (S ⊃ ∼A ∨ ∼U)
E) (∼A ∨ ∼U) ⊃ S