Which of the following statements is correct?

Options

A. Goblet cells secrete pepsionogen.
B. Parietal cells secrete hydrochloric acid.
C. Argentaffin cells secrete mucus.
D. Chief cells secrete gastrin.

Explanation

To solve the question "Which of the following statements is correct?", we will analyze each statement provided in the question regarding gastric cells and their functions.

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- The first statement claims that "goblet cells secrete pepsinogen."
- **Evaluation:** This statement is incorrect. Goblet cells are responsible for secreting mucus, not pepsinogen.

2. **Analyze the Second Statement:**
- The second statement claims that "goblet cells do not secrete pepsinogen."
- **Evaluation:** This statement is correct. Goblet cells secrete mucus and do not secrete pepsinogen.

3. **Analyze the Third Statement:**
- The third statement claims that "parietal cells secrete hydrochloric acid."
- **Evaluation:** This statement is correct. Parietal cells, also known as oxyntic cells, are responsible for secreting hydrochloric acid (HCl).

4. **Analyze the Fourth Statement:**
- The fourth statement claims that "Argentepin cells secrete mucus."
- **Evaluation:** This statement is incorrect. Mucus is secreted by goblet cells, not Argentepin cells.

5. **Analyze the Fifth Statement:**
- The fifth statement claims that "chief cells secrete gastrin."
- **Evaluation:** This statement is incorrect. Chief cells (or peptic cells) secrete proenzymes, not gastrin. Gastrin is secreted by G cells.

### Conclusion:
After evaluating all the statements, the correct statement is:
- **"Parietal cells secrete hydrochloric acid."**

### Final Answer:
The correct option is the third statement: **Parietal cells secrete hydrochloric acid.**

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