Under what conditions is a vehicle carrying loose materials not required to cover the top of the load with a canvas or tarpaulin?

• If the load is agricultural products in their natural state
• If the load-carrying compartment completely encloses the load
• If the loose materials are not blowing or spilling over the top of the load-carrying compartment
• Both B & C
  Explanation:

  "A vehicle carrying cargo or loose materials may not be required to cover the top of the load with a canvas or tarpaulin to prevent the escape of the load because of blowing or spilling if: 1. Any load-carrying compartment that completely encloses the load. or 2. The transporting of any load of loose materials not blowing or spilling over the top of the load-carrying compartment."