**Core Concept**
Methicillin-resistant Staphylococcus aureus (MRSA) infection is caused by a type of bacteria that is resistant to many antibiotics. The treatment of MRSA infection requires the use of antibiotics that are effective against MRSA.

**Why the Correct Answer is Right**
MRSA infections are often treated with antibiotics such as vancomycin, which inhibit cell wall synthesis by binding to the D-alanyl-D-alanine terminus of cell wall precursors. Other antibiotics like linezolid and daptomycin are also effective against MRSA, as they target different aspects of bacterial cell membrane function. These antibiotics are critical in managing MRSA infections, particularly in severe cases.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not mention a specific antibiotic known to be effective against MRSA.
**Option B:** This option is incorrect because it is not a commonly used antibiotic for treating MRSA infections.
**Option C:** This option is incorrect because it is not a standard treatment for MRSA infections.

**Clinical Pearl / High-Yield Fact**
It is essential to note that antibiotic resistance patterns can vary geographically, and local guidelines should be consulted when treating MRSA infections.

**Correct Answer: A.**