Which statement is true about employee participation and involvement? A. Managers can supervise through e-mail messages. B. Employees must know that supervisors and managers genuinely want their input and that it is valued. C. Managers and supervisors should allow selected employees to participate in decisions. D. Participative management does not require organizational commitment.In terms of preventing violence in the workplace, which is least necessary for supervisors? A. Supervisors should know security procedures, alarms, and warning codes. B. They should treat everyone with respect and consideration. C. Supervisors should be trained how to disarm persons with a weapon. D. They should keep all objects that could be used as weapons stored away