A the onus of proving soundness of mind of a person always rests upon a person who alleges such state of mind of another person.
B the onus of proving unsoundness of mind of a person always rests upon a person who alleges such state of mind of another person.
C the onus of proving unsoundness of mind rests upon person of unsound mind.
D the onus of proving unsoundness of mind is on the judge deciding the case involving person of unsound mind.