Please answer number 20-21

Use the following table to answer question 20-23 Number of Apples Total Utility 20 35 45 50 5 45 20. Refer to the accompanying table. The marginal utility of consuming the 2nd apple is A. 35 B. 10 C. 15 D. 20 21. Refer to the accompanying table. The marginal utility of consuming apples is A. constant. B. first increasing, but decreasing after the fourth apple. C. decreasing after the first apple D. constantly increasing. 22. Refer to the accompanying table. The marginal utility of the 5th apple is A. -5 B. O C. 5 D. 45 23. Refer to the accompanying table. The total utility as additional apples are consumed, but the marginal utility with each additional apple consumed. A. first decreases then increases; decreases B. first increases then decreases; decreases C. first decreases then increases; increases D. first increases then decreases; increases 24. The tendency for marginal utility to decline as consumption increases beyond some point is called A. the law of demand. B. the law of diminishing marginal utility. C. the rational spending rule. D. utility maximization