This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'All of the following cross plasma membrane except \nSelect and explain. \nA. Epinephrine, B. Thyroxine, C. Androstenedione, D. Estrogen', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref-KDT 6/e p48 Following drug cross plasma membrane Thyroxine Androstenedione Estrogen', 'role': 'assistant'}]