19. High discount rates will promote project designs (a) having high annual cost over construction cost ratios for a given output level. (b) having low annual cost over construction cost ratios for a given output level. (c) that are long-lived. (a) that are capital intensive. (e) that have none of the above. 20. In engineering economy optimization calculations (a) use a single measure of systems effectiveness. .. (b) one uses a production function that is linear. (c) one accounts for intangible. (a) commensuration in kind depends on adopting a discount rate. (e) cannot be defined by any of the above four completion statements