A result that is most likely to give a financial manager concern that his firm’s credit policy may have become too lenient is.（）

A. inventory turnover has decreased considerably. 

B. accounts receivable as a percentage of sales has decreased. 

C. weighted average collection period has increased.

哪些人可以申请工伤认定？（）

A、工伤职工或者其近亲属

B、社会保险行政部门

C、用人单位