Given below are six sentences, out of which sentences A and F are in the correct position. Sentences B, C, D and E are in a jumbled order. Select the option that gives the correct order.

A. Euthanasia means killing for good.
B. It refers to intentionally ending the life of a person in order to relieve him/her of prolonged uncontrollable pain and suffering.
C. Passive euthanasia implies letting one die by withholding or withdrawing the necessary life support means. 
D. It could be done in two ways-active or passive. 
E. Active euthanasia pertains to direct intentional killing by physical means or by administering a lethal dose of a drug or injection.
F. Both these forms of mercy killing are legal in the case of animals in many countries.