A 75-year-old woman is brought to the Emergency Department by her family. She has been getting more short-of-breath over the last 6 weeks and says her energy levels are low.. Bisoprolol

A 75-year-old woman is brought to the Emergency Department by her family. She has been getting more short-of-breath over the last 6 weeks and says her energy levels are low. An ECG on arrival shows atrial fibrillation at a rate of 114 / min. Blood pressure is 128/80 mmHg and a chest x-ray is unremarkable.
What is the appropriate drug to control the heart rate?
A.A Felodipine
B.A Amiodarone
C.A Digoxin
D.A Flecainide
E.A Bisoprolol***