In time study sone variations almost always occur from reading to reading for any element, even if the worker is not attempting to vary his pace. This variation is not caused by the following factors, among others

A.Random variations in operator movements and pace
B.Random variations in the positions of parts worked with
C.Random variations in the position of the tools used
D.Random variations caused by slight errors in watch reading
E.Random variations caused by electricity failures

According to Mc Gregor’s theory of management

A.All managers are complex in behaviour and it is difficult to get work done
B.X managers in organisation will not work and Y managers will work. The ratio X/Y depends on the organisational set up
C.The ratio X/Y is always on 0.5 for any organisation
D.X theory managers pressume that the average human being has an inherent dislike of work and will avoid it if he can
E.None of the above