Which of the following companies started selling humulin in the year 1983 ?

Options

A. Eli Lilly
B. Genetech
C. GEAC
D. none of these

Explanation

To answer the question about which company started selling Humulin in the year 1983, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Question**: The question asks which company began selling Humulin in 1983.

2. **Review the Options**: The options provided are:
- L.E. Lilly
- Genentech
- GEAC
- None of these

3. **Research Background Information**: Humulin is a form of human insulin that was genetically engineered. It was developed by inserting the DNA sequences for the A and B chains of human insulin into a plasmid, which was then introduced into E. coli bacteria to produce insulin.

4. **Determine the Correct Company**: In 1983, the American company L.E. Lilly was the first to successfully produce and sell Humulin, the genetically engineered insulin. They were responsible for preparing the DNA sequences for the insulin chains and producing the final product.

5. **Conclude the Answer**: Based on the information gathered, the correct answer to the question is **L.E. Lilly**.

### Final Answer:
The company that started selling Humulin in the year 1983 is **L.E. Lilly**.