My mother vowed several years ago that she would never own another pet . " They just break your heart when they die and I ca n't take it anymore . " I agree with her .
What is the thing that " breaks your heart " ?
Pick the best answer from the following options:
- None of the above choices .
 - People are upset because the valuable animal is gone and it is a loss of money value that is sad .
 - People are sad because the pets cause a virus that affects the physical heart .
 - The heart that is broken is the tombstone that is placed upon pets .


None of the above choices .