Select the correct answer.
 What is the justification for step 2 in the solution process?
 12y − 40 − 4y = 6y − 18
 Step 1: 8y − 40 = 6y − 18
 Step 2: 2y − 40 = -18
 A. 
 the subtraction property of equality
 B. 
 the division property of equality
 C. 
 the addition property of equality
 D. 
 the multiplication property of equality