**Core Concept**
Enterohemorrhagic Escherichia coli (EHEC) is a serotype of Shiga toxin-producing E. coli that causes severe foodborne disease, characterized by hemorrhagic colitis and potentially life-threatening hemolytic uremic syndrome (HUS).

**Why the Correct Answer is Right**
EHEC produces Shiga toxins (Stx1 and Stx2) that inhibit protein synthesis in host cells, leading to cell death and damage to the intestinal mucosa. The toxins are encoded by bacteriophages that infect the E. coli bacteria. The pathogenesis of EHEC is also influenced by its ability to adhere to intestinal epithelial cells, facilitated by adhesins such as intimin.

**Why Each Wrong Option is Incorrect**
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**Option B:** This option is also not provided, so we cannot evaluate it. Please provide the complete question.

**Option C:** This option is not provided, so we cannot evaluate it. Please provide the complete question.

**Option D:** This option is also not provided, so we cannot evaluate it. Please provide the complete question.

**Clinical Pearl / High-Yield Fact**
The most common source of EHEC infection is undercooked ground beef, but other foods such as unpasteurized apple cider and fresh produce can also be contaminated. To prevent EHEC infection, it is essential to handle and cook food safely.

**Correct Answer:**