**Core Concept**
Aortic stenosis is a valvular heart disease characterized by narrowing of the aortic valve, leading to increased resistance to left ventricular outflow. The peak systolic gradient across the aortic valve is a critical determinant of the severity of stenosis. In symptomatic patients with severe aortic stenosis, the primary goal of management is to alleviate symptoms and prevent complications.

**Why the Correct Answer is Right**
The patient's symptoms of fatigue during exercise, despite a relatively low peak systolic gradient of 60 mmHg at rest, suggest that he has severe aortic stenosis. The Bruce protocol is a standardized exercise stress test used to evaluate cardiac function, and the patient's inability to complete the test indicates significant impairment of left ventricular function. The correct management for this patient is surgical aortic valve replacement (SAVR), which is the gold standard treatment for symptomatic patients with severe aortic stenosis. SAVR aims to relieve the obstruction to left ventricular outflow, improve cardiac function, and reduce the risk of complications such as heart failure and sudden death.

**Why Each Wrong Option is Incorrect**
**Option A:** Medical management with beta-blockers, calcium channel blockers, or other vasodilators may be considered in asymptomatic patients with severe aortic stenosis, but it is not the best management for a symptomatic patient like this one.
**Option B:** Transcatheter aortic valve replacement (TAVR) may be an option for patients who are at high risk for surgical complications, but it is not the best initial management for this patient.
**Option C:** Exercise testing is a useful tool for evaluating cardiac function, but it is not a treatment option for aortic stenosis.

**Clinical Pearl / High-Yield Fact**
Symptomatic patients with severe aortic stenosis have a poor prognosis, with a 5-year survival rate of approximately 50% without surgical intervention. Early surgical referral is essential to improve outcomes and reduce the risk of complications.

**Correct Answer:** C. Surgical aortic valve replacement (SAVR) is the best management for this patient.