Y7

I'm struggling in Game Theory. I'd truly appreciate any help!

Suppose you have the following game:

FIRM A	FIRM B
STRATEGY	LOW PRICE	HIGH PRICE
LOW PRICE	0,0	50,-40
HIGH PRICE	-40,50	10,10

a. What is the Nash Equilibrium if it is a one-shot simultaneous game?

b. If this is a finitely repeated game, what is the probability of the game ending that would push players to cooperate?

c. If this is an infinitely repeated game, what is the interest rate that would push players to cooperate?