Which of the following statements are correct regarding good control procedures over program change control?

I. A programmer should be able to make changes to a program only while it is in the programmer’s “authorized to change” library.

II. All program changes should be reviewed and tested by the user group responsible for the application before the program is moved to the production library.

II. The program librarian should determine that once programs have been moved into the production library they are accessed only by computer operators for processing.

a. land II

b. II only

c. I and III d.I, I, and III