Question 21 (3 points) Refer to the diagram, where variable inputs of labor are being added to a constant amount of property resources. Marginal cost will be at a minimum for this rm when it is hiring O a 2workers. O b 4workers. O c more than 8 workers. 0 d 8 workers. Question 22 (3 points) \"all Jun-w um, 10 13 53 v: Q CLMI The diagram shows the short-run average total cost curves for ve different plant sizes of a firm. If in the long run the firm should produce output 25 it should do it with a plant of size 0 a #1. O b #2. O c #5' Timeleftforthis Q d #3. assessment: 78:05