The table below reports some of the results of an analysis of MPV conducted in 150 health areas. APPE ORPX GHER TONS OTIT Crude rate (x10,000) 15.8 9.6 12.6 18.1 3.7 Variation ratio 3.31 8.61 7.23 13.3 56.6 Coef. of variation 0.30 0.39 0.41 0.53 0.75 Weighted coef. of var. 0.33 0.36 0.41 0.54 0.87 Systematic component 0.09 0.08 0.12 0.25 0.78 APPE: appendectomy; ORPX: orchidopexy; GHER: groin hernia; TONS: tonsillectomy; OTIT: otitis media. Crude rates refer to the number of cases per 10,000 children under 15 years of age. Select one: O a. The systematic component of orchidopexy is 0.08. This means that the ratio of the rates of the areas with highest and lowest incidence, weighted by the population of each area, is 8. O b. The systematic component of orchidopexy is 0.08. This means that the deviation between the observed and the expected rates is 8%. O c. The systematic component of orchidopexy is 0.08. This means that the deviation between the observed and the expected rates, expressed as a percentage of the expected rate, is 8%. O d. The systematic component of orchidopexy is 0.08. This means that the difference between the rates of the areas with highest and lowest incidence is 8