This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
Which of the following statement is true regarding methotrexate? 
Select and explain. 
A. Oral bioavalability is 30-40%, B. Do not interfere with action of IL-1, C. Causes Thrombocytopenia, D. Not useful in crohn's disease
C: Causes Thrombocytopenia
Answer: C: Causes Thrombocytopenia 
Explanation: Methotrexate causes hepatotoxicity, bone marrow suppression, alopecia, mucositis etcRef: Katzung 13th ed Pg: 1074