Which of the given formulas of PL is the best symbolization of the following sentence?
Either England's importing beef is a sufficient condition for France's subsidizing agriculture, or China doesn't promote human rights when and only when South Africa supplies diamonds.
(A)(E ⊃ F) ∨ (~C ⊃ S) (B)(F ⊃ E) ∨ (S ⊃ ~C (C)(E ⊃ F) ∨ ~(S ≡ C) (D)(E ⊃ F) ∨ (~C ≡ S)
D