Suppose O2 and Vodafone are the only two telecommunications

companies in UK. Both companies are considering whether or

not to stop offering unlimited data plans. Each company has two

strategies: stop or don't stop. The first entry in the brackets is the payoffs

of O2 and the second entry is the payoffs of Vodafone, both in $million.

What will be the dominant strategies of O2 and Vodafone and what will

be the Nash equilibrium? Explain your answers.