## Core Concept
The patient's presentation is classic for acute appendicitis, characterized by initial periumbilical pain that migrates to the right lower quadrant, tenderness at McBurney's point, nausea, and anorexia. Acute appendicitis is an inflammation of the appendix, often requiring prompt surgical intervention.

## Why the Correct Answer is Right
The standard treatment for acute appendicitis is **appendectomy**, which can be performed either openly or laparoscopically. This surgical removal of the appendix is aimed at eliminating the source of infection and preventing potential complications such as perforation, abscess formation, or peritonitis. The correct answer involves this surgical intervention.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because while antibiotics may be used as part of the management, especially if there's an abscess or in cases where surgery is not immediately feasible, they do not represent the definitive treatment for acute appendicitis.
- **Option B:** This option is incorrect as it does not accurately represent a standard treatment approach for acute appendicitis.
- **Option D:** This option is incorrect because it does not accurately represent a standard treatment approach for acute appendicitis.

## Clinical Pearl / High-Yield Fact
A key clinical pearl is that the classic presentation of appendicitis includes pain migration from the periumbilical area to the right lower quadrant, tenderness at McBurney's point, and associated symptoms like nausea and anorexia. Early recognition and surgical intervention are crucial to prevent complications.

## Correct Answer Line
**Correct Answer: C.**