In the last paragraph, the writer states that some companies are reluctant to export becau

In the last paragraph, the writer states that some companies are reluctant to export because

A．there is little demand for their products.

B．the importation of certain goods is controlled.

C．they do not have good marketing techniques.

D．they are not able to compete with local businesses.

请帮忙给出正确答案和分析，谢谢！