Solve the following system using substitution

x + y = 5

x + y = - 3

a. (2,3)

b. (3,2)

c. infinitely many solutions

d. no solutions

Ok so i gt that u can use A and B for both equations. D would be the best answer because none of the other answers fit the equations. And C can'd fit it because u could't use every number to get - 3

I think it's c. infinitely many solutions cause there are others solutions to get - 3