Choose the correct answer.

Options

A. Digestion has started from buccal cavity
B. Villi is the infolding of small intestine
C. Intestine has acidic medium because of presence of HCI
D. All of the above

Explanation

To solve the question, we need to evaluate each statement provided in the options and determine their correctness. Here’s a step-by-step breakdown:

### Step 1: Analyze Statement A
- **Statement A**: "Digestion has started from buccal cavity."
- The buccal cavity, also known as the mouth, is where digestion begins. The presence of teeth (TIT) allows for chewing, and the salivary glands produce saliva (TUMP) that helps in mixing and beginning the chemical digestion of food.
- **Conclusion**: Statement A is correct.

### Step 2: Analyze Statement B
- **Statement B**: "Villi is the unfolding of small intestine."
- Villi are small, finger-like projections found on the inner surface of the small intestine. They increase the surface area for absorption of nutrients from digested food.
- **Conclusion**: Statement B is correct.

### Step 3: Analyze Statement C
- **Statement C**: "Intestine has acidic medium because of presence of HCl."
- Hydrochloric acid (HCl) is primarily secreted in the stomach, not the intestine. The small intestine has a more alkaline environment due to the secretion of bicarbonate from the pancreas to neutralize stomach acid. Therefore, this statement is misleading.
- **Conclusion**: Statement C is incorrect.

### Step 4: Analyze Statement D
- **Statement D**: "All of the above."
- Since Statement C is incorrect, Statement D cannot be correct as it claims that all previous statements are true.
- **Conclusion**: Statement D is incorrect.

### Final Answer
Based on the analysis:
- **Correct Answer**: Option A and Option B are correct, but Option C is incorrect. Thus, the correct answer is not "all of the above."