If emp_id contain the following set {1, 2, 2, 3, 3, 1}, what will be the output on execution of the following MySQL statement?

SELECT emp_id
FROM person
ORDER BY emp_id;

This question tests your understanding of how the ORDER BY clause works in MySQL.
Let's break it down:
* The SQL statement: * `SELECT emp_id`: This part selects the 'emp_id' column from the table. * `FROM person`: This specifies the table called 'person' to get the data from. * `ORDER BY emp_id`: This is the key! It instructs MySQL to arrange the selected 'emp_id' values in ascending order.
* The `emp_id` set: {1, 2, 2, 3, 3, 1}.
* The output: The SQL statement will sort this set of 'emp_id' values in ascending order, resulting in: * {1, 1, 2, 2, 3, 3}
Therefore, the correct answer is Option A.