Use the Data Sets: Mean and Standard Deviation applet to answer the question below. Understand the mean and standard deviation of a data set. You are asked to fill out a spreadsheet to create some data and then change the data according to the directions (that is, add 10, add 20, etc.). The spreadsheet found the Mean and the SD of your data sets. What pattern did you find for the SD of the data sets? Choose the correct answer below. OA. The SD changed relative to the directions. When you added 10, the SD went up half of that. OB. The SD changed relative to the directions. When you added 10, the SD went up by twice that. OC. The SD never changed in any of the columns. OD. The SD changed according to the directions. For example, when you added 10, the SD went up 10.