The Neoclassical Growth Model Assumes That with a Given State

The Neoclassical growth model assumes that with a given state of technology,

A) increases in the use of a single factor bring increasing returns.
B) increases in the use of a single factor result in constant returns.
C) increases in GDP are possible only if all factors are increased at an equal rate.
D) growth in GDP happens only if the labour force grows more quickly than the amount of physical capital.
E) the standard of living will decrease if the labour force grows more quickly than the amount of physical capital.