Clinical manifestations unique to vitamin B12 anemia (i.e., usually absent in other types of anemia) include:
A) fatigue, dyspnea on exertion, and pale skin.
B) palpitations, chest pain, and signs of heart failure.
C) dizziness, headaches, and nausea.
D) paresthesias, muscle weakness, and ataxia.
D) paresthesias, muscle weakness, and ataxia.`