In Class, Your Professor Shows You an MRI Scan of a Primate

In class, your professor shows you an MRI scan of a primate brain.The professor points out the relatively large size of the olfactory bulb beneath the frontal lobe.This suggests to you that this

A) primate exhibits a derived trait for an enhanced sense of smell, since this trait is not commonly observed in mammal species.
B) is a species of anthropoid because it has an increased reliance on vision.
C) primate must be a species of Strepsirhini, as that suborder of primates relies heavily on the sense of smell for many aspects of daily life.
D) species is nocturnal.