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
[{'content': 'Side effects of a drug arise due to interactions of the drug to molecules other than the target. These effects of the drug can be minimized by its high: \nSelect and explain. \nA. Specificity, B. Solubility, C. Affinity, D. Hydrophobicity', 'role': 'user'}, {'content': 'Answer: A \nExplanation: It can be understood from the example given below:\nAtropine is a non specific antagonist of muscarinic receptors. It can be used in the management of bronchial asthma by virtue of its M3 blocking action (bronchodilatìon). But it can cause tachycardia as an adverse effect due to blockade of cardiac M2 receptors. A more specific drug\xa0like tiotropium bromide (selective M3 antagonist) is less\xa0likely to produce this adverse effect.', 'role': 'assistant'}]