问题如下：
Company A is an iron and steel company, company B is in the leading position of coal industry, and company C serves as a salt producer. Both A and B are cyclical, but C is non-cyclical. Among them, the debt level of A is the highest. When assessing the creditworthiness of the three companies, which of them is likely to have the highest credit risk ?
选项：
A. company A.
B. company B.
C. company C.
解释：
A is correct.
The iron and steel company is in cyclical industry, indicating that it has more volatile earnings. Besides, the highest debt level obviously increases its credit risk.
这道题可以解释下吗？
