Q.
A. x + 4y = 13 and y = 4x - 7
B. 4x + y= 13 and 4y = x - 7
C. 4x + y = 13 and y = 4x -7
D. y - 4x = 13 and y + 4x = 7
E. None of the above
Correct choice: C
Explanation: