Which one among the following is correct if x, y, z are eliminated from, (bx/y+z = a, cy/z+x = b, az/x+y = c)?

Options :

1. a²b + b²c + c²a + abc = 0

2. a²b – b²c + c²a + abc = 0

3. a²b + b²c + c²a + 2abc = 0

4. a²b – b²c – c²a – abc = 0