Multimodaltransportreferstoatransportsystemusually（） underthecontrolor ownershipofoneoperator.

A.operated by several carriers with more than one mode of transport

B.operated by several carriers with more than two modes of transport

C.operated by one carrier with more than two modes of transport

D.operated by one carrier with more than one mode of transport

正确答案：operated by several carriers with more than one mode of transport