Which of the following statements about the AK model (Y = AK) of growth is false ?

The AK model (Y = AK) is a foundational first-generation endogenous growth model (so ) in which output is proportional to the broad stock of capital K. Because the marginal product of capital is constant (dY/dK = A) rather than diminishing, the model abandons the neoclassical assumption of diminishing returns to capital; consequently, whenever the investment rate exceeds depreciation (sA > delta), the economy experiences sustained long-run growth (so ). Therefore, ('The model assumes diminishing returns to capital') is directly opposite to the core assumption of the AK model and is clearly the false statement.