As the modern horse evolved from its ancestors due to changes in feeding habits, substantial changes occurred in the shape of its teeth. What kind of change in feeding habit is reflected by these modifications? A. The ancestors grazed on soft forest leaves, and modern horses graze on hard grasses.
B. The ancestors grazed on hard grasses, and modern horses graze on soft forest leaves.
C. The ancestors grazed on leaves of tall trees, and modern horses graze on hard grasses.