The solution to the system of equation below is (−2, −1).

2x − 3y = −1
11x − 9y = −13

When the first equation is multiplied by −3, the sum of the two equations is equivalent to 5x = −10.

Which system of equations will also have a solution of (−2, −1)?
a. 5x = −10
11x − 9y = −13

b. 2x + 9y = −1
11x − 9y = −13

c. −6x + 9y = −1
11x − 9y = −13

d. −6x + 3y = −1
5x = −10