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
Which of the following drugs is used to control tachycardia and palpitations in persons with acute symptoms of hyperthyroidism ? 
Select and explain. 
A. Liothyronine, B. Propranolol, C. Methimazole, D. Potassium iodide solution
B: Propranolol
Answer: B: Propranolol 
Explanation: None