7.Solve the following system of equations:

2x + 4y + 10z
x − 2y + 5z = −4
3x −4y −3z = 15

Select the appropriate response:
A) x = 2, y = 3, z = 5
B) x = 4 y = 3, z = 5
C) x = 2, y = 3, z =9
D) Not possible to solve