Vitamin `E` is called :

Options

A. tocopherol
B. Calciferol or ergocalciferol
C. Thiamine
D. Riboflavin

Answer

To determine what vitamin E is commonly called, we can follow these steps:

1. **Identify the Options**: The question provides four options:
- A) Tocopherol
- B) Calciferol (or Ergocalciferol)
- C) Thiamine
- D) Riboflavin

2. **Recall the Names of Vitamins**:
- Vitamin E is known for its antioxidant properties and is essential for various bodily functions.
- Vitamin D is known as calciferol (ergocalciferol).
- Vitamin B1 is known as thiamine.
- Vitamin B2 is known as riboflavin.

3. **Match Vitamin E with Its Common Name**:
- Among the options, tocopherol is the name associated with vitamin E.
- It is important to note that tocopherol refers specifically to a group of compounds that include alpha-tocopherol, which is the most active form of vitamin E in humans.

4. **Conclusion**:
- Based on the information, the correct answer is A) Tocopherol.

### Final Answer:
Vitamin E is called **Tocopherol**.