In the following three games, is each a coordination game or a prisoner’s dilemma?

The best way to check is to see if there is exactly one Nash equilibrium; another way is to see if there is a dominant strategy for each player.

To keep it a little challenging, we won’t give the actions obvious labels that might give away the answer. Higher numbers are always better: nj65

a. b. c. Player B Left Right Up (3,3) (5,5) Player A Down (5,5) (1, 1) Player B Left Right Up (100, 100) (600, 50) Player A Down (50, 600) (500, 500) Player B Left Right Player Up (8,6) (7,5) A Down (3,0) (9,9)