The client diagnosed with Vitamin B12 deficiency presents to the outpatient department for the follow up evaluation. Which nursing assessment finding indicates that the treatment has been effective? The client:

A) Has gained 2 pounds and has pink buccal mucosa: While weight gain and pink mucosa are positive signs, they are not definitive indicators of effective treatment for Vitamin B12 deficiency specifically. B) Verbalizes eating more iron-fortified cereals: This dietary change is beneficial for overall nutrition but does not directly relate to the treatment of Vitamin B12 deficiency. Iron and Vitamin B12 serve different functions in the body. C) No longer has paresthesia of the hands and feet: The resolution of paresthesia is a strong indicator that the treatment for Vitamin B12 deficiency has been effective. Paresthesia is often associated with nerve damage due to B12 deficiency, so its absence suggests improvement. D) Has stopped drinking any alcoholic beverages: While reducing alcohol intake can be beneficial for overall health and may help with nutrient absorption, this change alone does not indicate that the specific treatment for Vitamin B12 deficiency has been effective.