Which term refers to a psychiatric disorder characterized by a preoccupation with building body mass?

Question

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Muscle dysmorphia, also known as bigorexia, is a psychiatric disorder characterized by a preoccupation with building body mass and an unduly low perception of one's own muscularity. People with this disorder may engage in excessive exercise, weightlifting, and use of dietary supplements, and may have distorted body image and social impairment. The other options (A, B, C, and E) refer to other types of eating disorders, but not specifically focused on body mass or muscle size.

Which Term Refers to a Psychiatric Disorder Characterized by a Preoccupation