Which of the following propositions relating to euthanasia was laid down by the Supreme Court in 2018 in the case of Common Cause v. Union of India?

A. An adult human being having mental capacity to take an informed decision has right to refuse medical treatment including withdrawal from life saving devices

B. An adult human being not having mental capacity to take an informed decision has a right to refuse medical treatment including withdrawal from life saving devices

C. An adult human being having mental capacity to take an informed decision has right to refuse medical treatment but not the right to decide withdrawal from life saving devices

D. None of the above

Answer: Option A