If a programmer is restricted from updating and modifying production code, what is this an example of?

A.
Rotation of duties

B.
Due diligence

C.
Separation of duties

D.
Controlling input values

Explanation:
There are several examples of separation of duties; this is just one
of them. It is important that a system is set up for proper code manipulation to
take place when necessary, instead of allowing a programmer to make changes
arbitrarily. These types of changes should go through a change control process and
should have more entities involved instead of just one programmer.