The Cross Section of an Adult Femur Reveals a Bone

The cross section of an adult femur reveals a bone that is longer/flattened in one direction, giving the cross section the appearance of an oval.This suggests

A) that the individual was likely very physically active.
B) that the individual was lethargic and largely sedentary.
C) that the individual had a nutritional deficiency as a child.
D) You cannot discern anything from the shape of bone.