Which of the following is mentioned in the passage as a way in which brown bears and sloth bears are similar?

1. They tend to become aggressive when provoked.
2. They live almost exclusively in treeless environments.
3. They are preyed upon by animals that can climb or topple trees.
4. They are inefficient in their locomotion.
5. They have relatively large canine teeth.

除了D之外，其它的是不是都在原文中提到过？请指教！