You are team leader at a large call center which handles sales calls for manufacturers. At the beginning of your shift, you gather your team members and try to help them develop a positive mood as they start their work. You do this because you know that such a mood at the start of the workday affects employees' perceptions of ______. 
A) coworkers' moods 
B) direct reports' moods 
C) supervisors' moods 
D) customers' moods