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.

构成画面的主要颜色为冷色或冷色调时，画面给人（）。

A.较强的空间感

B.较弱的空间感

C.宁静的意蕴

D.不宁静的感觉