For each of the following production functions and quantity wished to produce, given a fixed capital amount equal to 1 , what is the amount of labor that minimizes costs? (Answer as a whole number, no decimals included; if impossible, answer NA) A) q=K+L,10 B) q=min{20K,10L},10 : C) q=min{20K,10L},40 : D) q=KL5