Contrary to popular opinion, the employees largely agree that the board of directors is performing satisfactorily. This was made clear by the secretarial staff's recent memo, which expressed admiration for the board's latest policy decisions.

Which of the following is an assumption necessary to the argument above ?

A. The rest of the employees feel the same way the secretarial staff does about the board's performance
B. Popular opinion is that the employees are disappointed with the performance of the board of directors on the topics of wage increases and benefits for employees
C. The secretarial staff traditionally cultivates a closer relationship with the board of directors than it does with the other employees
D. The board of directors gave the secretarial staff a wage increase that was proportionally higher than that given to the other employees
E. Memos are not considered formal documents in modern business culture