TechWiz Entertainment sells four types of products: video games, radios, DVDs, and CDs. The numbers sold for 2021 and 2022 are shown in the double bar graph below. Use this graph to answer the questions. Number sold 1200 1000 800 600 400 200 0 Video games DVDs Product CD4 2021 2022 (a) Which products sold more in 2021 than in 2022? Check all that apply. video games radios DVDs CDs (b) Which products had more than 600 sold in 2021? Check all that apply. Dvideo games radios DDVD (c) Estimate the total number of CDs sold in the two years. CDs X CDs 5