Which is the best use of a line chart?
a. to show parts of a whole emphasizing specific data.
b. to compare and contrast discrete categories of data
c. to display changes over time.
d. to display data points that are unconnected and distinct.

Mastercard managers are motivated to increase (1) the number of individuals who have and use a mastercard credit card, (2) the number of banks and other clents who issue mastercards to customers and/or employees, and (3) the number of locations that accept mastercard payments. discuss how mastercard could use its data warehouse to it expand each of these customer bases.