Player 1 / Player 2
L           
M1             
M2             
R

U                        
1,0            4,2              
2,4             
3,1

M                       
2,4            
2,0             
2,2              
2,1

D                        4,2            
1,4             
2,0               
3,1

8.19

Are there any mixed-strategy Nash equilibria ? Explain.