19. Frank Murphy completed an appraisal report on a vacant parcel of land, which had a highest and best use of retail development. Five comparables were analyzed according to their sale price per square foot. However, one significantly larger than the subject and two were significantly smaller, so Frank adjusted these three comparables for size. Which of the following statements is TRUE? (1) There is nothing suspect in the approach taken by the appraiser. (2) The appraiser cannot adjust for size if price per square foot as the unit of comparison; this is double-counting. (3) The appraiser must reject the three sales that had a significant size difference. (4) Given the size issues, Frank should have applied an income capitalization approach instead