To process a set of records using explicit cursors, the correct sequence of commands is:

B. OPEN, FETCH, CLOSE

Explanation:

• The first step is to declare a cursor, which is typically done outside of the sequence of commands listed in the question. The cursor declaration specifies the SELECT statement that defines the result set to be processed.
• The next step is to open the cursor using the OPEN command. This prepares the result set for processing.
• The FETCH command is then used to retrieve each record in the result set one at a time. This command is usually used in a loop, where processing is performed on each record as it is retrieved.
• Finally, the CLOSE command is used to release the resources associated with the cursor.

Therefore, the correct answer is:

The Answer is: B. OPEN, FETCH, CLOSE