The truck and trailer exerts the wheel reactions shown on the deck of the girder bridge. Determine the largest moment it exerts in the splice at \(C\). Assume the truck travels left to right along the center of the deck, and therefore transfers half of the load shown to each of the two side girders. Assume the splice is a fixed connection and, like the girder, can support both shear and moment.

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6 kN 4 kN 2 kN 1 kN B 1.5 m 2 m 1 m 10 m 5 m