Final answer:
The Gini index is a measure of inequality and dispersion. It can be used to analyze the customer ID attribute.
Step-by-step explanation:
The Gini index is a measure of inequality and is used to measure the dispersion of a variable. In this case, the customer ID attribute is being analyzed for inequality, so the Gini index is a measure of dispersion (B). The Gini index ranges from 0 to 1, with higher values indicating more inequality.