Read the following short story excerpt, then answer the question that follows: When we rescued Topper, we thought he would be the perfect family dog. And he was…half of the time, anyway. His Jekyll and Hyde personality made our lives completely unpredictable.

This paragraph alludes to the story of Dr. Jekyll and Mr. Hyde. Based on this literary allusion, which choice best describes Topper's personality?

Topper changes from good to evil unexpectedly.
Topper constantly begs the family for more food.
Topper sleeps all day and stays away all night.
Topper runs away whenever he gets the chance.