Asystem of equations and its solution are given below.

system a

-x-2y=7
5x-6y=-3
solution = (-3,-2)

choose the correct option that explains what steps were followed to obtain the system of equations below.

system b

-x-2y=7
-16y=32

a.
to get system b, the second equation in system a was replaced by the sum of that equation and the first equation multiplied by -5. the solution to system b will not be the same as the solution to system a.
b.
to get system b, the second equation in system a was replaced by the sum of that equation and the first equation multiplied by 5. the solution to system b will be the same as the solution to system a.
c.
to get system b, the second equation in system a was replaced by the sum of that equation and the first equation multiplied by -6. the solution to system b will not be the same as the solution to system a.
d.
to get system b, the second equation in system a was replaced by the sum of that equation and the first equation multiplied by 3. the solution to system b will be the same as the solution to system a.