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: Medicine
A 25 year old patient complains of Crushing chest discomfort for 45 minutes, no significant medical history. ECG is normal. His chest pain improved with sublingual nitroglycerin diagnosis is 
Select and explain. 
A. Diffuse esophagial spasm, B. Myocardial infarction, C. Anxiety attack, D. scleroderma
A: Diffuse esophagial spasm
Answer: A: Diffuse esophagial spasm 
Explanation: DES →
Chest pain simulate that of MI
Pain can be precipitated by drinking cold liquids.