3. Suppose that two oil companies - BP and Exxon - own adjacent natural gas fields. The profits that each firm earns depends on both the number of wells it drills and the number of wells drilled by the other firm. The table below lists each firm's individual profits:

Exxon Drill one well Drill two wells Drill one well Exxon's profit = $10 million Exxon's profit = $12 million BP's profit = $10 million BP's profit = $6 million BP Drill two wells Exxon's profit = $6 million Exxon's profit = $8 million BP's profit = $12 million BP's profit = $8 million