How To Age A White-tailed Deer by Looking At The Teeth pt. 2 : Older Deer

At the end of April I was attending a Track and Sign Evaluation. On the second day of the two day eval we came across a female White-tailed Deer carcass and were asked the question of how old the dead Deer was when she died. We were given three options to choose from based on what we could see. The three options were: A) 1-3 years, B) 4-7 years, or C) 7 and up.
Well, when I got home I started I realized I had a lot more research to do.