44 Over the decades, a few psychological researchers have ventured out of the dark realm of mental illness into thesunny land of the mentally hale and hearty.
(A) Some psychologists have focused their research on what makes people happy and healthy than on what makespeople mentally ill.
(B) A few psychologists have recovered from mental illness and resumed their health.
(C) A few psychologists like to take more care of the problems of healthy people than those of sick people.
(D) Some psychologists have discovered how to make the mentally ill find their happiness again.