Tell which value of the variable, if any, is the solution of the equation. \[ d-(-14)+6 d=0 ;\{-2,2,7,-7\} \] Which of the following is the solution of the equation? A. -2 B. 2 C. 7 D. -7 E. No solution is given in the set of values.

Step 1 ：\(d - (-14) + 6d = 0\)

Step 2 ：\(d + 14 + 6d = 0\)

Step 3 ：\(7d + 14 = 0\)

Step 4 ：\(7d = -14\)

Step 5 ：\(d = -\frac{14}{7}\)

Step 6 ：\(d = -2\)

Step 7 ：\(\boxed{-2}\)