Given: Point B is the midpoint of segment AC, and segment AC = 12 Prove: Segment AB = 6 Select the reason that best supports Statement 6 in the given proof. A. Distributive Property B. Substitution Statement: 1 AC = 12 2. B is the midpoint of AC 3. AB = BC . C. Division Property of Equality D. Subtraction Property of Equality 4. AB + BC = AC 5. AB + AB = AC 6. AB + AB = 12 7.2(AB) = 12 8. AB = 6 Reason: 1. Given 2. Given 3. Definition of a midpoint 4. Postulate 5. Substitution 6. [ ? ] 7. Algebra 8. Division Property of Equality