Can someone help me with these math problems?

1. use the following matrix

x= [1 2 3 4]

[4 -1 -2 0]

[6 1 5 -3]

what is a 2,3 equal?

a. -2

b. 1

c. -1

d. 5

2. use the following matrix

x= [1 2 3 4]

[4 -1 -2 0]

[6 1 5 -3]

what is a 3,1 equal?

a. 3

b. 1

c. 6

d. -2

any help that you can give me would be very much appreciated.