What Is the Correct Definition of 'Mind' (As in 'Disease

What is the correct definition of 'mind' (as in 'disease of the mind') :

A) 'Any mental disorder which has manifested itself in violence and is prone to recur' Bratty [1963].
B) '…the condition of the brain is irrelevant and so is the question of whether the condition of the mind is curable or incurable, transitory or permanent.' Kemp [1957].
C) 'An involuntary act…means an act done by the muscles, without any control by the mind, such as a spasm, a reflex action or a convulsion…' Bratty [1963].
D) '…the mental faculties of reason, memory and understanding…' Sullivan [1984].