A Workstation Must Produce 400 Units an Hour

Multiple Choice

A workstation must produce 400 units an hour.It takes 24 minutes to receive the necessary material for production from the previous workstation.Output is moved between workstations in containers holding 44 units.If the process uses a safety factor of 10%,then the number of kanbans that should be circulating between this workstation and the previous workstation is

A) 2.
B) 4.
C) 6.
D) 8.