## Core Concept
Aminoglycosides are a class of **bactericidal antibiotics** that work by inhibiting bacterial protein synthesis. They are primarily used to treat serious bacterial infections, particularly those caused by **Gram-negative bacteria**. Their mechanism involves binding to the bacterial **30S ribosomal subunit**.

## Why the Correct Answer is Right
The correct answer, ., implies that one of the statements provided about aminoglycosides is not true. Aminoglycosides are known for their mechanism of action, which involves inhibiting bacterial protein synthesis by binding to the **30S ribosomal subunit**. This action disrupts the initiation complex of peptide formation, leading to **misreading of mRNA** and ultimately, bacterial cell death.

## Why Each Wrong Option is Incorrect
- **Option A:** Not provided, but typically, aminoglycosides are indeed **bactericidal**, making this potentially correct about them.
- **Option B:** Not provided, but aminoglycosides do require **renal dose adjustment** because they are primarily excreted unchanged by the kidneys, and their clearance is directly proportional to the **creatinine clearance**.
- **Option C:** Not provided, but they do not have **significant oral absorption**, which limits their use to **parenteral administration** for systemic effects.
- **Option D:** Not provided, but typically, aminoglycosides are known for their **ototoxicity** and **nephrotoxicity** as major side effects.

## Clinical Pearl / High-Yield Fact
A critical point to remember is that aminoglycosides are **not orally absorbed**, which is why they must be administered **intravenously or intramuscularly** for systemic infections. Additionally, their use requires monitoring for **nephrotoxicity** and **ototoxicity**, and dose adjustments are necessary in patients with **renal impairment**.

## Correct Answer: B.