Terry, a 73-Year-Old Widower, Was in the Hospital for Six

Terry, a 73-year-old widower, was in the hospital for six months with cancer. Finally, the painful treatments got to be too much for him and he just gave up and let himself die. This passive form of suicide is best considered to be an example of:

A) suicide-by-proxy
B) anticipatory suicide
C) submissive death
D) unilateral death