ejection systolic murmur and narrow pulse pressure on examination - echo confirms aortic stenosis and shows an aortic valve gradient.. Regular cardiology outpatient review

A 65-year-old man is found to have an ejection systolic murmur and narrow pulse pressure on examination. He has experienced no chest pain, breathlessness or syncope. An echo confirms aortic stenosis and shows an aortic valve gradient of 40 mmHg. How should this patient be managed?
A. Routine aortic valve replacement
B. Urgent aortic valve replacement
C. Anticoagulation
D. Aortic valvuloplasty
E. Regular cardiology outpatient review***