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

A captive power plant is

A.established by a industry to meet its own requirements
B.an emergency power plant for peak load
C.a power plant operated in case of emergency only
D.one which directly drives the machine without producing electrical energy