An appliance store manager noted that the sales of home appliances contributed 74% of the store's profits in the year 2010 and 82% in the year 2011. Of the following choices, which statement about home appliance sales is true? Home appliance sales increased profits by 9.75%. Home appliance sales increased profits by 8%. Home appliance sales increased profits by 8 percentage points. Home appliance sales increased profits by 9.75 percentage points.