问一道题：NO.PZ2018062004000109 [ CFA I ]

NO.PZ2018062004000109问题如下 Whiof the following statements is least correaccorng to the cash flow statement of Company A.The primary sourof cash is operating activities.B.The primary use of cash is investing activities.C.The primary use of cash is financing activities. B is correct.The primary use of cash is financing activities, not investing activities. 如何判断major sourof cash是哪个

NO.PZ2018062004000109 问题如下 Whiof the following statements is least correaccorng to the cash flow statement of Company A.The primary sourof cash is operating activities. B.The primary use of cash is investing activities. C.The primary use of cash is financing activities. B is correct.The primary use of cash is financing activities, not investing activities. 题目上面给的都是net cash flow，net CFO是正数，net CFF是负数，可是这并不能推断出现金流出主要的use是financing吧。比如下面这种情况CFO中，cash in是5 billion，cash out 是4 billion，所以 net CFO是1 billion；CFF中，cash in是1 billion，cash out 是3 billion，所以 net CFF是-2 billion；这种情况跟题目类似，但是也不能说 cash primary use是financing，主要用途依然是operating啊。而且我记得何老师讲的是，公司现金一定主要跟operating有关

The primary use of cash is investing activities. The primary use of cash is financing activities. B is correct.The primary use of cash is financing activities, not investing activities.老师 答案里说最主要的是融资活动 不应该是operating activity吗？这个数值最大啊？

老师您好，这个题没看懂在问什么？考点是什么？解题思路是什么？

这道题是选错误的一项，答案不对啊？