K Determine which of the four levels of measurement nominal ordinal interval ratio is most appropriate for the data below Course grades from A to F Choose the correct answer below OA The nominal level of measurement is most appropriate because the data cannot be ordered OB The ratio level of measurement is most appropriate because the data can be ordered differences obtained by subtraction can be found and are meaningful and there is natural starting point OC The ordinal level of measurement is most appropriate because the data can be ordered but differences cannot be found or are meaningless OD The interval level of measurement is most appropriate because the data can be ordered differences obtained by subtraction can be found and are meaningful and there is no natural starting point