Which of the following is called grain alcohol ?

Options

A. Ethanol
B. Ethyl alcohol
C. Methyl carbinol
D. All of these

Explanation

To determine which of the following is called grain alcohol, we can analyze the options provided:

1. **Ethanol**
2. **Ethyl alcohol**
3. **Methyl carbinol**
4. **All of the above**

### Step-by-Step Solution:

**Step 1: Identify the options.**
- The options given are ethanol, ethyl alcohol, and methyl carbinol.

**Step 2: Understand the terms.**
- Ethanol is a type of alcohol that is commonly consumed and is the same as ethyl alcohol.
- Methyl carbinol is another name for ethanol, but it can be confusing because "carbinol" typically refers to methanol when used alone.

**Step 3: Clarify the definition of grain alcohol.**
- Grain alcohol is a term that refers to ethanol specifically derived from the fermentation of grains such as wheat, barley, and corn.

**Step 4: Conclusion.**
- Since ethanol is derived from grains and is commonly referred to as grain alcohol, we can conclude that the correct answer is **Ethanol** (which is also known as ethyl alcohol).

### Final Answer:
**Ethanol (or Ethyl alcohol)** is called grain alcohol.

---