Use the Following to Answer Question

Multiple Choice

Use the following to answer question:
Figure: Pricing Strategy in Cable TV Market II
-(Figure: Pricing Strategy in Cable TV Market II) Use Figure: Pricing Strategy in Cable TV Market II.If CableNorth followed a high-price strategy one period but found that CableSouth followed a noncooperative low-price strategy,and CableNorth decided to lower prices for the next month,we would say that CableNorth is following a:

A) kinked demand model.
B) dominant strategy.
C) tit-for-tat strategy.
D) collusive strategy.