The B case provides information that permits students to quantify the human-factor relationships that may be causing some of the improvement slowdown outlined in the A case (UVA-OM-1042) and to develop a systems-dynamics simulation model. The C case (UVA-OM-1044) provides students with additional opportunities to practice the quantification of systems relationships (dominated by soft variables) and to develop a simulation model. See also the D case (UVA-OM-1045, an abridgement of the A, B, and C cases).