What is the difference between a predicate and a function?

Select one:

A$.$

Predicates produce propositions as output, and functions produce objects as output.

B$.$

Predicates produce objects as output, and functions produce propositions as output.

C$.$

Predicates do not produce propositions as output, and functions produce objects as output.

D$.$

Predicates produce propositions as output, and functions do not produce objects as output.