Jack Kevorkian,a Michigan Physician,has Assisted a Number of Terminally Ill

Jack Kevorkian,a Michigan physician,has assisted a number of terminally ill patients to end their lives.After given a series of trials,Dr.Kevorkian was:

A) convicted of second-degree murder and given a long prison sentence.
B) convicted of involuntary manslaughter and given a short amount of jail time.
C) not convicted of any crime,but had his medical license revoked.
D) not convicted of any crime,and he is still practicing medicine.