NO.PZ2018062018000034
问题如下：
At the end of 2016, the account receivable of Company B is $50 million. At the end of 2017, Company B has a revenue of $60 million and the account receivable of this year is $30. The amount of cash collected from customers should be:
选项：
A.$50 million
B.$40 million
C.$80 million
解释：
C is correct. cash colloection from customer=60-(30-50)=80
如题
