When Deciding Which Items to Collect at the Crime Scene

When deciding which items to collect at the crime scene, an officer should consider:

A) space in evidence locker is limited, so only most important items should be retained.
B) it is much better to have many items in the evidence locker that are not used than to discover that something that is needed was not kept.
C) biological evidence should be photographed but not retained because it will degrade and contaminate the evidence locker.
D) All of the these factors should be considered when decided what evidence to collect.