A unit load device $($ULD$)$ is a unitization tool used exclusively in air freight operations.$$ Which statement best describes a ULD?

Question $3$Select one:

a$.$

ULDs are specifically matched to the aircraft dimensions, maximizing the potential loading space of an aircraft.

b$.$

ULDs are exclusively used for commercial freight.

c$.$

ULDs increase the amount of time required to load an aircraft.

d$.$

ULDs typically hold palletized freight.