What Is the Primary Difference Between Factitious Disorder and Malingering

What is the primary difference between factitious disorder and malingering?

A) The symptoms in factitious disorder may be deliberately induced while those in malingering are faked.
B) The symptoms in factitious disorder are not produced intentionally, whereas they are in malingering.
C) Both involve faking symptoms but those with factitious disorder are usually more successful than malingerers.
D) The feigning of symptoms in factitious disorder is motivated by economic gain, whereas the motivation in malingering is to get attention.