Airline A and Airline B are the two largest airlines in the country.

Airline A and Airline B are the two largest airlines in the country. The chief executive officer of Airline A calls the chief executive officer of Airline B and says, "Why don't we both raise prices 25% across the board next week?" This is an example of:

spirited competition.

attempted collusive behavior.

predatory pricing.

a corporate merger.

a tying arrangement.