In thermodynamics spontaneous processes are those

A.Where a difference is observed in any microscopic property of the system between different times or states
B.Where a difference is observed in any microscopic property of the system between different times or states
C.Which occur in the direction of an intensive property or driving force contained within the system
D.Which require an agency outside the system to force the process
E.None of the above

A cold short metal is

A.One that can not be heated above 500?C
B.One that cannot be welded
C.One that cannot be worked under the hammer or by rolling or bent when cold without racking at the edges
D.One that cannot be easily rolled or bent at low temperatures
E.None of the above