单选题 Many clients on the eating disorders unit have been admitted for anorexia nervosa. The signs and symptoms that would be most specific for this diagnosis are
A．Slow pulse, 10% weight loss, and alopecia
B．Compulsive behaviors, excessive fears, and nausea
C．Excessive activity, memory lapses, and an increased pulse
D．Excessive weight loss, amenorrhea, and abdominal distention