Context: so i have two best friends & they are both tiny & skinny & literally eat junk food every single day & never gain weight . they 're absolutely gorgeous btw , one with blonde hair & blue eyes , the other with olive skin & brown hair . & then there 's me . the fat , ugly one .

Question: Why do n't the friends gain weight ?
Options:
0. They do n't eat more calories than they burn .
1. None of the above choices .
2. One of them has blonde hair and blue eyes .
3. They eat junk food every day .
Answer: 0