In

A$.$ Player A has a dominant strategy.

B$.$ Player B has a dominant strategy.

C$.$ both players have dominant strategies.

D$.$ neither player has a dominant strategy.

Game $4$ above,

$10.$ In Game $4$ above,

A$.$ Player A choosing A$1$ and Player B choosing B$1$ is a Nash equilibrium. B$.$ Player A choosing A$2$ and Player B choosing B$2$ is a Nash equilibrium. C$.$ there is no Nash equilibrium.

D$.$ there are multiple Nash equilibria in pure strategies.

$11.$ In Game $4$ above,

A$.$ the Nash equilibrium maximizes the total payoff.

B$.$ the Nash equilibrium does not maximize the total payoff. C$.$ there is no Nash equilibrium.

D$.$ neither player has a dominant strategy.