An isoquant is Select one: O a. a curve that shows all possible levels of output that can be produced at the same cost O b. a curve that shows the maximum total output as a function of the level of labor input O c. a curve that shows all the combinations of inputs that yield the same total outputThe marginal rate of technical substitution is the absolute value of the slope of the isoquant and tells Select one: Q a. the rate at which both inputs can be increased without exceeding the cost 0 b. the rate at which one input can be reduced per additional unit of the other input while holding output constant 0 c. the rate at which cost increases as output increases