Because butter was brought to take photos. It is evidence for requesting destruction in the system. But employees do not store them in separate storage containers and store them.
Because butter is used for photography. This is evidence that requires the destruction of the system. However, the staff did not store it in storage containers and stored it separately.
Because butter is used to take pictures and is evidence that needs to be destroyed in the system, the staff did not store it in the storage container and stored it separately.