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: Pharmacology
All of the following are side effects of Linezolid, EXCEPT: 
Select and explain. 
A. Optic neuropathy, B. Pancytopenia, C. Cardiac arrhythmia, D. Lactic acidosis
C: Cardiac arrhythmia
Answer: C: Cardiac arrhythmia 
Explanation: Adverse effects may include optic and peripheral neuropathy, pancytopenia, and lactic acidosis. Ref: Harrison's Principles of Internal Medicine, 18th Edition, Page 1379