Suppose that you go to dinner with 9 friends, and you decide in advance to split the bill equitably. Each of you has one of two choices:

1. Order a cheap meal with beer.

2. Order a delicious, expensive meal with wine.

Each person prefers option 2. What is this game's Nash equilibrium?

(A) Everyone orders the cheap meal.

(B) Everyone orders the expensive meal.

(C) Half of the people order the cheap meal, and half the expensive meal.

(D) There is no Nash equilibrium.

61.Suppose that there exists a country with 30 million people, each of whom has the right to vote in an election. It costs $10 to vote, and if a person's favoured candidate wins, then they get a payoff of $20. Each election has two political candidates.

What is this game's Nash equilibrium?

(A) Everyone votes for their favoured candidate.

(B) Everyone votes for their least favourite candidate.

(C) People only vote if the cost of voting is reduced.

(D) Nobody votes.