What distinguishes C1 freight elevators from C2 freight elevators?

C1 freight elevators are specifically designed to carry the entire truck, which is essential for loading and unloading goods in various types of industrial and commercial settings. This feature allows C1 elevators to accommodate larger, bulkier items that require the truck bed to be transported as part of the freight.

In contrast, C2 freight elevators do not carry the truck, which limits their design and function to transporting loads without the physical vehicle. This fundamental difference greatly influences how these elevators are used and the types of loads they can handle effectively.

The other distinctions provided in the choices do not accurately reflect the primary difference between C1 and C2 freight elevators, emphasizing that the defining characteristic is related to the capability of transporting the truck itself in C1 elevators.