I'm studying with a textbook that passed the ruby ​​engineer certification exam.
Among the answer options for the question sentence, there was the following content.

-The exception stack can be obtained by the method stackrace of the exception object.

The above content is incorrect as an answer, but I don't know what is wrong.
I would appreciate it if you could teach me without any explanation and even if you look it up.

Does it mean that you can see the past error history in the same meaning as backtrace?
Also, I would appreciate it if you could explain the meaning of the exception stack in an easy-to-understand manner.