Regarding Quiz (command cat and nano)

Hello Sir,
The Quiz no 7 in Introduction to Linux OS . I think my answer is correct . According to question to open a file editor chose a command so answer is cat demo.txt . If the question is like " to create a file editor" then answer will be nano demo.txt . I got confuse ,can anyone solve my problem.

To open the editor you always use the command nano file_name.txt , this can be used to either open/create it or even open it to be edited. When u wish to access the content of a file(or create its copy) only then cat file_name.txt command can be used. So the answer according to the quiz is correct

Okk,thanks. i think so.