不太理解题意，equity 也可能是negative的吗？
问题如下图：
选项：
A. 
B. 
C. 
解释：
NO.PZ2018062004000226问题如下If analyst chooses potentistoinvestment baseon ROE, whiof following is requireto consir well?A.positive earnings.B.negative earningsC.negative equityA is correct.If earnings anequity are negative the same time, the ROE will positve, but this stois not gooinvestment. Therefore, positve earnings shoulrequire如题，请问对应的知识点在哪里可以找到呢？
NO.PZ2018062004000226 我以为题目时要注意题目哪些事不能选的，选了个b
NO.PZ2018062004000226 negative earnings negative equity A is correct. If earnings anequity are negative the same time, the ROE will positve, but this stois not gooinvestment. Therefore, positve earnings shoulrequire根据答案，答案里说也有可能二者都是负的，所以才应该考虑earning是负的情况吧？没明白题目究竟要什么。是考虑earning正负得问题，还是必须需要正的earning。还请老师解答一下。
不是很理解答案，如果earning是正数，equity是负数呢？由于正负数的各种组合，我觉得abc三个答案都要考虑
