What Lifestyle or Health Characteristic Was Seen in Preagricultural Hunters-Gathers

What lifestyle or health characteristic was seen in preagricultural hunters-gathers that is not seen in modern humans?

A) The food supply was much more varied than it is today.
B) Efficient processing of foods eaten was not required.
C) The body's metabolism was faster than it is now.
D) Daily physical exertion was necessary for survival.
E) Food was processed based on the "thrifty gene," which no longer applies today.