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From (X)($y)(Fx ↔ Gxy) We May Validly Infer

Question 5

Multiple Choice

From (x) ($y) (Fx ↔ Gxy) we may validly infer

A) ($y) (Fa ↔ Gay) .
B) (x) (Fx ↔ Gxa) .
C) ($y) (Fy ↔ Gyy) .
D) ($y) (Fa ↔ Gxy) .

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