A Patient Has Anorexia Nervosa

A patient has anorexia nervosa.The history shows the patient virtually stopped eating 5 months ago and lost 25% of body weight.The serum potassium is 2.7 mg/dL.Which nursing diagnosis applies?

A) Adult failure to thrive related to abuse of laxatives,as evidenced by electrolyte imbalances and weight loss
B) Ineffective health maintenance related to self-induced vomiting,as evidenced by swollen parotid glands and hyperkalemia
C) Disturbed energy field related to physical exertion in excess of energy produced through caloric intake,as evidenced by weight loss and hyperkalemia
D) Imbalanced nutrition: less than body requirements related to refusal to eat,as evidenced by loss of 25% of body weight and hypokalemia