Task: Question Answering
Input (English): Question: For what values of k is the system of equations independent? The equations are as follows:
kx + 5y = 3; 3x + 4y = 9

 Option A: 15/9

 Option B: 15/2

 Option C: 15/1

 Option D: 15/4

 Option E: 15/7
Output (English): Option D