Although It Has Been Years and Years Since Johnny Studied

Although it has been years and years since Johnny studied dinosaurs in school, when shown a picture of a stegosaurus, he can still tell you that the stegosaurus was a large herbivore with plates running along its back. This is an example of:

A) short-term memory"
B) long-term memory"
C) declarative memory"
D) non-declarative memory"