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;

The code you see uses "ORDER BY emp_id DESC" to arrange the data. This part tells MySQL to sort the results of the query. Let's break down what it means:
"ORDER BY" means that the results will be sorted.
"emp_id" means we're sorting by the column called "emp_id".
"DESC" means we are sorting in descending order.
So, the correct answer is Option A: Data of emp_id will be sorted in descending order.
In descending order, the largest values will appear first, and the smallest values will appear last.