Last year, in order to reduce its operating expenses, a law firm’s management decided to adopt a new policy in which the lawyers would work from their homes for 2 out of 5 workdays per week. According to the management, this step should have decreased the firm’s expenditures on electricity, water, parking, and food. The yearly expense report showed that the operating expenses had been reduced significantly.
Which of the following, if true, most weakens the firm management’s confidence that the reduction of operating expenses resulted from the implementation of the new policy?
A. The relative part the operating expenses out of all of the expenditures of the firm was considered to be average.
B. During the past year, the firm moved to new offices in a modern building that allows natural lighting and regulates internal temperatures.
C. Many lawyers found working from home more challenging than they had expected.
D. The total number of working hours paid for by the firm to its employees grew by 5 percent after the implementation of the new policy.
E. Some of the lawyers asked to increase their home-working days from 2 to 3, and the management approved most of these requests.