Question: For the first - order formula ( ( A A x ) x ? ? ( f x = g x v v f x

For the first-order formula
((AAx)x??(fx=gxvvfx=fz))((AAx)xvv(fx=gx??fx=fz)),
choose ALL that apply.
a. There are ten occurrences of x, all of which are bound
b. This is an axiom of predicate logic
c. An abstraction is p
d. This is a tautology
For the first - order formula ( ( A A x ) x ? ? (

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