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
Which one of the following is a cholestatic drug ? 
Select and explain. 
A. Erythromycin, B. Phenothiazines, C. Oral contraceptives, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None