Imagine a Frog at a Pond Where Multiple Species Are

Imagine a frog at a pond where multiple species are mating. Female frogs are able to discern males making their species-specific calls. How is she able to do this?

A) The visual cues of a male frog from her species allows her to go directly to that male.
B) The olfactory cues from a male frog of her species allows her to go directly to that male.
C) The female only hears calls from a male frog of her species, which results in her going to a male frog of her species.
D) The female frog hears all of the calls at the pond, but only male calls from her species excite a specific group of neurons which results in her going to a male frog of her species.