According to management scholar Henry Mintzberg, none of the following are true of all managers except: a. They work shorter hours and rely on written communication rather than verbal. b. They have work that is characterized by fragmentation, brevity, and variety. c. They have work that is routine but fragmented and often deals with high-level concerns. d. Part of their performance measures deal with how they treat their subordinates. e. They work longer hours and rely on verbal communication rather than written. f. They tend to work long hours at a slow pace.Dante, as the social media manager for an electronics company, often solicits information via Facebook and Twitter from customers. He then takes the complaints, suggestions, and praise to his superior managers, who often incorporate customer ideas into new designs. Dante's company would be described as a _____ system. a. Partially-accessible b. Communicative c. Open d. Closed e. Continuous f. Participative