**Core Concept**
Pulmonary surfactant is a complex mixture of phospholipids, neutral lipids, and proteins that lines the alveolar surface, reducing surface tension and preventing alveolar collapse during exhalation. It plays a crucial role in maintaining lung compliance and facilitating gas exchange.

**Why the Correct Answer is Right**
Pulmonary surfactant is produced by type II pneumocytes and secreted into the alveolar space. It contains surfactant protein A (SP-A) and surfactant protein D (SP-D), which help to regulate surfactant function and stability. The main component of pulmonary surfactant is dipalmitoylphosphatidylcholine (DPPC), which reduces surface tension and prevents alveolar collapse.

**Why Each Wrong Option is Incorrect**
**Option A:** This option might be incorrect if it states that pulmonary surfactant is not produced by type II pneumocytes, but rather by type I pneumocytes or another cell type.
**Option B:** This option might be incorrect if it states that pulmonary surfactant does not contain surfactant protein A (SP-A) or surfactant protein D (SP-D), which are essential components of pulmonary surfactant.
**Option C:** This option might be incorrect if it states that pulmonary surfactant does not reduce surface tension or prevent alveolar collapse during exhalation, which are its primary functions.

**Clinical Pearl / High-Yield Fact**
Pulmonary surfactant deficiency or dysfunction can lead to respiratory distress syndrome (RDS) in premature infants, which is a significant cause of morbidity and mortality in this population.

**Correct Answer:**
(No answer provided, please provide the correct answer to complete the explanation)