Consider the Romer model of ideas seen in lectures. Ideas are accumulated following AA = OLA, with 0 = 0LA-1A$. Assume that 1 = 1. In this case a. an increase in the number of researchers L, increases the rate at which each researcher finds a new idea b. an increase in the number of researchers LA lowers the rate at which each researcher finds a new idea LA c. an increase in the number of researchers has no effect on the rate at which each researcher finds a new idea d. None of the above