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
The release of histamine and leukotrienes from mast cells is prevented by: 
Select and explain. 
A. Zileuton, B. Nedocromil sodium, C. Zafirlukast, D. Fexofenadine
B: Nedocromil sodium
Answer: B: Nedocromil sodium 
Explanation: None