**Core Concept**
Mitral stenosis is a valvular heart disease characterized by the narrowing of the mitral valve orifice, leading to impaired blood flow from the left atrium to the left ventricle. The resulting increased pressure in the left atrium can cause various auscultatory findings during physical examination.

**Why the Correct Answer is Right**
In mitral stenosis, the characteristic auscultatory findings include a low-pitched, rumbling diastolic murmur best heard at the apex, often described as a "grunting" or "purring" sound. This murmur is typically due to the turbulent flow of blood through the narrowed mitral valve orifice. The increased pressure in the left atrium can also cause an accentuated first heart sound (S1) and a laterally displaced apical impulse.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided, but a correct auscultatory finding in mitral stenosis is a low-pitched, rumbling diastolic murmur.

**Option B:** A high-pitched, blowing systolic murmur is more characteristic of mitral regurgitation, not mitral stenosis.

**Option C:** A mid-diastolic murmur is more typical of increased flow across the tricuspid valve, such as in atrial septal defects or pulmonary hypertension.

**Option D:** A late systolic murmur is more characteristic of ventricular septal defects or aortic regurgitation, not mitral stenosis.

**Clinical Pearl / High-Yield Fact**
A key clinical finding in mitral stenosis is a left atrial enlargement, which can be detected on chest radiographs or echocardiography. This enlargement can lead to a "double density" sign on chest radiographs due to the increased size of the left atrium.

**Correct Answer:** B. A high-pitched, blowing systolic murmur is more characteristic of mitral regurgitation, not mitral stenosis.