Vitamin `A` is called:

Options

A. Ascorbic acid
B. Retinol
C. Calciferol
D. Tocopherol

Answer

To answer the question "Vitamin A is called:", we will follow these steps:

### Step 1: Identify the options given in the question.
The options provided are:
- Ascorbic acid
- Retinol
- Calciferol
- Tocopherol

### Step 2: Understand what each term refers to.
- **Ascorbic acid**: This is the chemical name for Vitamin C, which is water-soluble.
- **Retinol**: This is the chemical name for Vitamin A, which is fat-soluble and essential for vision and other bodily functions.
- **Calciferol**: This is the chemical name for Vitamin D, which is also fat-soluble.
- **Tocopherol**: This is the chemical name for Vitamin E, which is fat-soluble as well.

### Step 3: Determine which vitamin corresponds to Vitamin A.
From the definitions:
- Vitamin A is specifically referred to as **retinol**.

### Step 4: Conclude the answer.
Therefore, the correct answer to the question "Vitamin A is called:" is **retinol**.

### Final Answer:
Vitamin A is called **retinol**.

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