If an individual is mentally and emotionally healthy, he or she is better able to handle difficult life challenges or problems because individuals who are mentally and emotionally healthy are likely to have a positive outlook, higher self-esteem, and feel a sense of belonging and purpose. However, if your emotional and mental health is poor, you're more likely to be negative and not cope well with everyday stresses, such as losing a job.
I believe it is A because i feel it is the only exercise were you are using your arms to lift you entire body off the ground, but who knows i could be wrong <span />