Which one of the following statements is not true about Pearson's product-moment correlation coefficient r?

AIt is simply a measure of the degree to which the two variables vary together.

BIt is a non-parametric measure of the relationship between two variables measured on nominal and ordinal scales.

CIts value lies between minus 1.0 and plus 1.0.

DIts value is liable to be spuriously high if outliers are present in the data.

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