Maria: "I saw a picture of your cousin, Ben, from his graduation. He looks so different now!"
David: "Yeah, he grew out his hair. But you could still tell it was him, right?"
Maria: "Definitely! Even with the longer hair, his distinctive gap between his two front teeth made him instantly recognizable. It's such a unique feature that really stands out."
David: "True, that gap has always been his signature look."
What specific physical detail allowed Maria to instantly recognize Ben, despite his changed hairstyle?
A) His longer hair.
B) His graduation photo.
C) His distinctive gap between his two front teeth.
D) His overall different look.