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I am trying to finish up a program I created that is supposed to represent US Crime Data

found in a .csv file. I have written the code and it has no syntax errors, but I am having runtime errors and can't figure out what's happening. The user is prompted with multiple questions regarding the stats about different rates of murder and robbery in the US, but it all comes out as null. I know that there is something wrong with accessing the file, but I am not sure what it is. My code for each class is below:

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