内生的结论是技术进步是可持续的，并且没提到边际效应递减，所以为什么不是新古典呢？

问题如下：

Pamuk concludes: The impact from these policies will cause a long-term increase in the economy’s growth rate and the standard of living. Furthermore, if we emphasize R&D spending, then higher rates of saving and investment are unlikely to encounter diminishing marginal returns. Pamuk’s conclusion regarding the growth policy debate is most consistent with which model of economic growth?

选项：

A.Endogenous B.Neoclassical C.Classical

解释：

Pamuk’s conclusion is consistent with the endogenous growth model. In the endogenous growth model, the economy does not reach a steady growth rate equal to the growth of labor plus an exogenous rate of labor productivity growth. Instead, saving and investment decisions can generate self-sustaining growth at a permanently higher rate. This situation is in sharp contrast to the neoclassical model, in which only a transitory increase in growth above the steady state is possible. The reason for this difference is because of the externalities on R&D, diminishing marginal returns to capital do not set in.