A piece of skidded cargo contains two skids, each 42 inches long and contacting only 2 roller conveyors each. The cargo will be loaded on a C-17 using only bi-directional rollers. What is the maximum roller load for this cargo?

A) Length of the skid
B) Number of roller conveyors per skid
C) Type of roller conveyors used
D) Total weight of the cargo