Which of the Following Lists Gives Factors That Increase Labor

Multiple Choice

Which of the following lists gives factors that increase labor productivity?

A) saving and investment in physical capital,and wage increases
B) expansion of human capital,labor force increases,and discovery of new technologies
C) expansion of human capital,population growth,and discovery of new technologies
D) saving and investment in physical capital,expansion of human capital,and discovery of new technologies
E) labor force increases and wage increases