Piaget and Nautica do not have a sapphire watch unless Breitling's having a diamond watch is a sufficient and necessary condition for either Cartier's offering multiple dials or Gucci's selling a self-winder.
A) ∼(P • N) ∨ [(C ∨ G) ≡ B]
B) (∼P • ∼N) ∨ [(B ⊃ C) • (G ⊃ B)]
C) (∼P • ∼N) ∨ [(B ≡ (C ∨ G)]
D) (∼P • ∼N) ⊃ [(B ≡ (C ∨ G)]
E) [(B ≡ (C ∨G)] ⊃ (∼P • ∼N)

Question

Quizplus · Accepted Answer

Choice C accurately represents the statement given. It states that if Piaget and Nautica do not have a sapphire watch, then either Breitling having a diamond watch is equivalent to Cartier offering multiple dials or Gucci selling a self-winder, or both Cartier and Gucci offer these features if Breitling has a diamond watch. This is consistent with the original statement, and is the most accurate representation among the given choices.

Piaget and Nautica Do Not Have a Sapphire Watch Unless