I was writing a draft for an essay for a Political Philosophy course and I was extremely cramped time so I decided to pull quotes from the authors (Machiavelli and Hobbes) off the internet. Along with the quotes I took some of the leading sentences. I submitted the draft and changed up the quotes and the essay but accidentally emailed the wrong copy to the Teachers Assistant and handed in the proper copy.
I heard back from the department that I have an exploratory meeting about the essay.
What should I do/expect and how can I mitigate this, its my first offence and I don't want it on my record or get kicked out but I know I did something that is wrong.