A project manager is running into problems with the team. People are repeatedly running into trouble over seemingly small problems?

who takes notes at meetings, what dress is appropriate for the office, who people need to notify when they take a day off. The problems started out small, but as more people run into more problems the situation is rapidly escalating. This situation is most likely caused by a lack of: A. Ground rules B. A reward system C. Sensitivity training D. Common courtesy