Which techniques are used to study total plant flow? O A. flow diagram, from-to chart and flow process chart O B. from-to chart, activity relationship diagram and Dimensionless block diagram O c. flow diagram, operation chart and flow process chart O D. flow diagram, work cell load chart and from-to chartThe techniques will help us to establish the optimum placement of everything that needs space and include: O A The activity relationship diagram O B. The worksheet O c he dimensionless block diagram O D. All of the above