Evaluate the following statements:

1. Record-at-a-time DML means that the query gets recorded from the user at the time the user inputs the query and then gets processed.

2. Record-at-a-time DML means that navigating the database starts with positioning on one specific record and going from there onwards to other records.

3. Set-at-a-time DML means that the query gets set beforehand and then gets processed by the DBMS.

4. Set-at-a-time DML means that many records can be retrieved in one DML statement.

a. 1 and 3 are right.

b. 2 and 3 are right.

c. 1 and 4 are right.

d. 2 and 4 are right.