On October 1, Courtland Company sold merchandise in the amount of $5,800 to Carter Company, with credit terms of 2/10, n/30. The cost of the items sold is $4,000. Courtland uses the periodic inventory system. Carter pays the invoice on October 8, and takes the appropriate discount. The journal entry that Courtland makes on October 8 is:

Even for homework, we're not here just to give you answers. See our guidelines:
https://www.askmehelpdesk.com/finance-accounting/announcement-font-color-ff0000-u-b-read-first-expectations-homework-help-board-b-u-font.html

But for a quiz we theoretically should not be helping at all. A quiz is to test YOUR knowledge of the subject you're supposed to be learning. The time to ask question is before quizzes and tests, to make sure of your understanding of the material.