Where must the center of balance (C/B) be marked?

The center of balance (C/B) marking is crucial for the safe transportation of cargo, particularly in air freight operations. It ensures that the load is balanced and helps prevent tipping or instability during transport. Marking the C/B aids in the proper loading and unloading of cargo and allows for better weight distribution when securing the cargo within the aircraft.

The correct answer indicates that the C/B must be marked on all relevant items, which encompasses various forms of transportation and types of cargo. This includes marking on vehicles as well as all rolling stock, ensuring that regardless of the transport vehicle or the configuration, the center of balance is clearly indicated for the safety of the cargo and personnel involved in handling it.

This comprehensive approach to marking ensures operators have the necessary information to secure and handle each piece of cargo appropriately, minimizing risks during transit.