"Given the Long Run Implication of Solow's Growth Model with Respect

"Given the long run implication of Solow's growth model with respect to the rate of savings,the low savings rate in the United States is not a problem." This statement overlooks that over time it appears that

A) total factor productivity and the growth rate of capital per person are positively related.
B) total factor productivity and the growth rate of capital per person are inversely related.
C) total factor productivity and the difference between the growth rates of capital per capita and population are not related a and k - n are not related.
D) savings rates and per capita growth rates are inversely related.