In retractional flow system in plant layout

A.Material is transferred from one machine to another without having to move again along the same path
B.The flow is repeated for completing non-consecutive operations
C.Materials fed at one end and components leave at the other end
D.The feeding to and ejection from the line is at the same end
E.The flow of material is in zig-zag path

Public goods are different from private goods because

A.The government produces public goods, while private goods are produced by private persons
B.Public goods are preferred to private goods
C.The amount consumed by one does not affect the amount available for others
D.Private goods can be consumed only by private individuals while public goods can be consumed by government and private citizens
E.All of the above