**Core Concept**
Gastric polyps are growths on the mucosal surface of the stomach, and some types have a higher risk of malignancy. These polyps can be classified into different histological types based on their cellular characteristics and potential for malignancy.

**Why the Correct Answer is Right**
Hyperplastic polyps are the most common type of gastric polyp, but they have low malignant potential. In contrast, **adenomatous polyps** have a higher risk of malignant transformation due to the presence of dysplastic cells. The malignant potential of adenomatous polyps is similar to that of colorectal adenomas, and they should be treated with caution.

**Why Each Wrong Option is Incorrect**
* **Option A:** Hyperplastic polyps have a low malignant potential and are typically small and sessile.
* **Option B:** Inflammatory polyps are associated with chronic gastritis and have no significant malignant potential.
* **Option D:** Metaplastic polyps are often found in the setting of chronic atrophic gastritis and have a low risk of malignancy.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that all gastric polyps should be thoroughly investigated with histopathological examination to determine their malignant potential, regardless of their size or appearance.

**Correct Answer:** C. Adenomatous polyps.