In paragraph 1, why does the author mention that Eohippus had canine teeth?

• To make the point that Eohippus evolved from ancestors with a diet different from that of Eohippus
• To explain why Eohippus' teeth were so similar to those of its predecessors
• To show why scientists believe that Eohippus was exclusively herbivorous
• To argue that physical features that originally evolved to serve one purpose can later serve a different purpose

This is a multiple choice.