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).

Name: 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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Question

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The Answer of 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).

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