This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Vitamin B12 deficiency can lead to all, except: 
Select and explain. 
A. Megaloblastic aneamia., B. Myopathy, C. Optic neuritis, D. Myelopathy.
B: Myopathy
Answer: B: Myopathy 
Explanation: Vitamin B12 deficiency
A. Hematological manifestations

Megaloblastic anemia
Macrocytic anemia

B. Neurological

Cerebrum —> dementia
Spinal cord --> myelopathy
Cranial nerve —> optic neuritis
Peripheral nerve —> Peripheral neuropathy