An engineering firm specializes in installing environmentally friendly components, such as solar panels and green technology, on the rooftops of many different types of buildings in a large urban area. Each project is assigned to one of several installation teams. The owner, who is concerned with costs, is conducting an analysis of worker efficiency. Once he has completed the analysis, he plans to retrain the team that has the highest average projected completion time in order to improve that team's efficiency.

Which one of the following, if true, most seriously calls into question the owner’s plan for selecting the team to be retrained?


A. The installation fees that the firm charges its customers are lower than those charged for similar projects done by other companies.

B. If the time that the team takes to finish a project is not lowered significantly, the firm could lose business to competitors.

C. The team that has the highest average completion time tends to be assigned the most complex projects.

D. Retraining the team will substantially increase the short-term costs of the firm and thereby impact its profitability.