**Core Concept**
Anorexia nervosa is a complex eating disorder characterized by restrictive eating patterns, significant weight loss, and distorted body image. The treatment of anorexia nervosa involves a multidisciplinary approach, including pharmacotherapy, psychotherapy, and nutritional counseling. In this context, medications are used to address associated symptoms such as depression, anxiety, and obsessive-compulsive behaviors.

**Why the Correct Answer is Right**
Medications used for anorexia nervosa aim to alleviate symptoms of depression, anxiety, and obsessive-compulsive behaviors. Selective serotonin reuptake inhibitors (SSRIs) such as fluoxetine (Prozac) are commonly used to treat depression and anxiety in patients with anorexia nervosa. Another medication used is olanzapine (Zyprexa), an atypical antipsychotic that helps with weight gain and reduces obsessive-compulsive behaviors. Furthermore, stimulants like methylphenidate (Ritalin) may be used to enhance appetite and weight gain in some patients.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not relevant to the treatment of anorexia nervosa.
* **Option B:** This option is not accurate, as medications like benzodiazepines are not typically used for anorexia nervosa.
* **Option D:** This option is not correct, as topiramate is primarily used for epilepsy and migraines, not anorexia nervosa.

**Clinical Pearl / High-Yield Fact**
Medications for anorexia nervosa should be used cautiously, as they may have significant side effects, particularly weight gain. It is essential to monitor patients closely for any adverse effects and to adjust treatment plans as needed.

**Correct Answer: C. Olanzapine (Zyprexa) and Fluoxetine (Prozac) are commonly used medications in the treatment of anorexia nervosa.