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 are features of ethambutol toxicity, except ? 
Select and explain. 
A. Retrobulbar neuritis, B. Colour vision defects, C. Hyperuricemia, D. Hypercalcemia
D: Hypercalcemia
Answer: D: Hypercalcemia 
Explanation: Ans. is 'd' i.e., Hypercalcemia