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: Pathology
[{'content': 'Platelet Dense granules contain all except - \nSelect and explain. \nA. ADP, B. 5-HT, C. Calcium, D. VWF', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Platelets contain two specific types of granules : -\nA) Alpha granule →\xa0Contains fibrinogen, fibronectin, factors V & VIII, PDGF, TGF- β and platelet factor 4.\nB) Dense bodies or δ\xa0granules\xa0→\xa0Contain ADP, Ca+2, histamine, serotonin, and epinephrine.', 'role': 'assistant'}]