All of the following are correct except?

Options

A. When it comes to human beings, it is all more difficult to define living state.
B. We observe patients lying in coma in hospital virtually supported by machines which replace heart and lungs, patient is otherwise brain-dead.
C. The patient has no self-consciousness, are such patients who never come back to normal life, living or non-living.
D. Consciousness, growth, reproduction are definite features