One Difference Between Exogenous Growth Models and Endogenous Growth Models

One difference between exogenous growth models and endogenous growth models is

A) there is no steady state in an exogenous growth model
B) endogenous growth models have no role for total factor productivity
C) exogenous growth models seek to explain only short run business cycles
D) endogenous growth models seek to explain technological progress
E) exogenous growth models do not rely on production functions