If an economy's output is described by a Cobb-Douglas production function with constant returns to scale, then other things equal, which of the following statements is correct. Increasing the level of capital per worker will result in a constant increase in labour productivity. O Increases in capital per worker are subject to diminishing returns. O Improvements in the level of technology do not have any effect on labour productivity. O Increases in capital per worker exhibit constant returns to scale. O None of the above