Context: This picture shows a fossil of an animal called an aurochs.
The aurochs was hunted by humans and went extinct around 1627. The oldest aurochs fossils are about 2,000,000 years old.
Which trait did this aurochs have? Select the trait you can observe on the fossil.
A. a striped body
B. a mouth
Determine the correct option from the provided choices and reply with its corresponding letter.

B