It's C because it's fat. B and D are also risky, especially if B is used without working out. But it's C.
The most likely answer would probably be "more likely to be depressed."
(coming from someone that’s attempted to)
you should
1. listen to them talk about how they feel if they are comfortable with doing so
2. reassure them they are loved by u and others
3. help them find ways to cope and try to cheer them up
4. tell someone else to get them help if they are in the process or making plans to commit
5. be careful what you say to them they are probably not in a stable emotional state
The best way to get accurate information on the risks of a new health-enhancing activity is to consult someone who is informed and experienced in that activity and it is a good idea to consult your doctor about the activity before participating in it to make sure you are physically capable of doing so.