Correct option is A
UDL stands for "Uniformly Distributed Load." In the context of beams and structural analysis, a uniformly distributed load is a load that is spread evenly across the length of the beam. This means that every unit length of the beam carries the same amount of load. The load distribution is typically represented as a straight line in load diagrams. UDLs are common in many engineering applications, including the analysis and design of beams in buildings and bridges.