Hi, Can i get help with the following problem?

Hi, Can i get help with the following problem? I really don't understand how to do it

Consider the following two person static game where Player 1 is the row player and Player 2 is the column player

 C D E

A . 1,1 0,2 2,0

B . 0,0 1,-1 -1,3

a.There is an equilibrium where Player 1 plays A with probability 3/4.

b.There is an equilibrium where Player 1 plays A with probability 2/3.

c.There is no mixed strategy Nash equilibrium.

d.There is an equilibrium where Player 1 plays A with probability 1/2.