If You Advertise and Your Rival Advertises,you Each Will Earn

Multiple Choice

If you advertise and your rival advertises,you each will earn $4 million in profits.If neither of you advertises,you will each earn $10 million in profits.However,if one of you advertises and the other does not,the firm that advertises will earn $1 million and the non-advertising firm will earn $5 million. Which of the following is true?

A) A dominant strategy for firm A is to advertise.
B) A dominant strategy for firm B is to advertise.
C) A Nash equilibrium is for both firms to advertise.
D) None of the preceding answers is correct.