1.2 Diamonds are categorized according to the \"four Cs\": carats, clarity, color and cut. Each diamond stone that is sold in the open market is provided a certificate by an independent diamond assessor that lists these characteristics. Data for 308 diamonds were extracted from Singapore's Business Times and saved in the DIAMONDS file. Color is classified as D, E, F, G, H, or I while clarity is classified as IF, V, W81, W82, V81, or V82. a. Use an appropriate histogram to describe the carat distribution of the diamonds. b. Use an appropriate histogram to describe the carat distribution of diamonds certified by the (BIA group. c. Repeat part b for the HRD and IGI certification groups. d. Compare the three carat distributions, parts b and o. Is there anyr particular certification group that appears to be assessing diamonds with higher carats than the others