As Soon as Rashidat Caught a Whiff of the Cologne

As soon as Rashidat caught a whiff of the cologne of the woman sitting in front of him in class, he was attracted to her. Though she was a complete stranger, her smell was familiar. He was unable to place the smell, but it brought back good memories. Why?

A) Rashidat was downwind from the woman's pheromones.
B) Connections from the olfactory bulb are plentiful in the amygdala.
C) Rashidat's vomeronasal system was activated.
D) The woman's odor type was the same as his.