ultiple Choice Questions: Choose the Best Answer.1-1. The marginal rate of technical substitution (RTS) of labor for capital measures(1) the amount by which labor input can be reduced while holding quantity produced constant when one more unit of capital is used.(2) the amount by which capital input can be reduced while holding quantity produced constant when one more unit of labor is used.(3) the ratio of total labor to total capital.(4) the ratio of total capital to total labor.(5) none of the above