All cheetahs are faster than some tigers. Everything is striped if, and only if, it is a tiger. So, if some things are cheetahs, then some things have stripes. (Cx: x is a cheetah; Tx: x is a tiger; Sx: x has stripes; Fxy: x is faster than y)
-Which of the following claims can also be derived from the premises of this argument?
A) (∀x)∼Sx ⊃ (∀x)∼Cx
B) (∀x)(∃y)[Fxy ⊃ (Cy • Tx)]
C) (∃x)(Cx • Tx)
D) ~(∃x)(Cx • Tx)
E) (∀x)(∃y)[Fxy ⊃ (Cx • Ty)]

Question

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The Answer of All cheetahs are faster than some tigers. Everything is striped if, and only if, it is a tiger. So, if some things are cheetahs, then some things have stripes. (Cx: x is a cheetah; Tx: x is a tiger; Sx: x has stripes; Fxy: x is faster than y)
-Which of the following claims can also be derived from the premises of this argument?
A) (∀x)∼Sx ⊃ (∀x)∼Cx
B) (∀x)(∃y)[Fxy ⊃ (Cy • Tx)]
C) (∃x)(Cx • Tx)
D) ~(∃x)(Cx • Tx)
E) (∀x)(∃y)[Fxy ⊃ (Cx • Ty)]

All Cheetahs Are Faster Than Some Tigers