What is the significance of "ORDER BY emp_id DESC" in the following MySQL command?

SELECT emp_id, fname, lname
FROM person
ORDER BY emp_id DESC;

A. Data of emp_id will be sorted in descending order

B. Data of emp_id will be sorted in ascending order

C. Data of emp_id will be sorted in either ascending or descending order

D. All of the mentioned

Answer: Option A