How does work flow from one state to the next in a team kanban board?
a. the scrum master moves the work from one state to the next to ensure ongoing progress within the team
b. people working in the first state move the work to the next state
c. during the daily stand-up, team members make decisions and discuss how to move the work
d. team members of a state pull work from the previous state when they can do so without impacting their current state wip constraint