A study was conducted in Ghana to find out if there was an association between daily fiber intake and colon cancer. Two hundred (200) adults with high-fiber diets were recruited and followed for 840 pets on years, of which 20 developed colon cancer. one hundred and fifty (150) adults with moderate fiber intake were also followed for 900 pets on years and 30 developed colon cancer. fifty (50) adults with low fiber intake were followed for 450 person years, and 15 developed colon cancer. (I) Calculate the incidence ratio (IR) of colon cancer among adults with high, moderate, and low fiber intake​