Physical and Human Capital Investments Are

Physical and human capital investments are

A) different in that the opportunity for economic profit is present for physical capital but not for human capital investments.
B) different in that human capital decisions do not involve future income considerations, while physical capital investments do.
C) similar in that nonmonetary considerations play an equally important role in both.
D) similar in that both involve forgoing current income (and consumption) in an effort to achieve higher future income (and consumption) .