问题如下图：
选项：
A. 
B. 
C. 
解释：
c选项哪里不对呢…？麻烦老师解答
NO.PZ2016091001000019 The net operating cycles is the measure of the time neeto convert rmaterials into cash from a sale. The operating cycles is the measure of the time from paying materisuppliers to cash collection. A is correct. operating cycle=number of ys of inventory+number of ys of receivables. net operating cycle=operating cycle- number of ys of payables. receivable打成了payable
BC的描述是不是刚好反了？
b和c哪里不对呢？麻烦老师详细解答
