This Table Shows Individual Demand Schedules for a Market

This table shows individual demand schedules for a market.
According to the table shown,what can be said of Betty and Barney's demand for this good?

A) Betty's and Barney's demand both follow the law of demand.
B) Barney's demand follows the law of demand,but Betty's does not.
C) Betty's demand follows the law of demand,but Barney's does not.
D) Neither Betty's nor Barney's demand follows the law of demand.