## Core Concept
Primary tuberculosis typically occurs in individuals who are infected with *Mycobacterium tuberculosis* for the first time. It usually affects the lungs but can also affect other parts of the body. The primary infection site is often in the lung periphery.

## Why the Correct Answer is Right
The correct answer isn't directly provided, but we can infer based on common knowledge about primary tuberculosis. Typically, primary tuberculosis is characterized by the Ghon complex, which includes the primary lung lesion and associated lymph node involvement. It often heals with minimal scarring and may calcify.

## Why Each Wrong Option is Incorrect
Without specific details on options A, B, C, and D, we can still discuss general incorrect statements about primary tuberculosis:
- **Option A:** If a statement like "Primary tuberculosis usually presents with cavitation" is listed, it would be incorrect because cavitation is more characteristic of secondary (post-primary) tuberculosis.
- **Option B:** If a statement like "It often involves the upper lobes of the lungs" is listed, it would be incorrect for primary tuberculosis, as upper lobe involvement is more typical of secondary tuberculosis.
- **Option C:** If a statement like "The primary site of infection is usually in the lung periphery" is listed, it would be correct, not incorrect, as primary tuberculosis often starts in the peripheral lung fields.
- **Option D:** Without specifics, if a common incorrect statement about primary tuberculosis is provided, it would relate to its typical presentation or characteristics that don't align with established medical knowledge.

## Clinical Pearl / High-Yield Fact
A key point to remember is that primary tuberculosis often presents with the **Ghon complex**, which includes a lung lesion (usually peripheral) and involved hilar or paratracheal lymph nodes. This complex may calcify and is a hallmark of primary TB infection.

## Correct Answer: D.