Given: B and C form a linear pair, A B, and mzA-120 " Prove: m.C=60 Statement: 1.A-B 2.mzA-mzB 3.mzA-120 4.120-m.B 5. B and C forma linear pair 1. Given Reason: 2.[?] 3. Given 4. Substitution 5.Given 6.m2B+mzC-180 6. Linear Pair Postulate 7.120+mzC-180 7. Substitution 8.m.C=60 8. Select the reason that best supports Statement 2 in the given proof. A. Reflexive Property B. Definition of Congruency C. Linear Pair Postulate D. Subtraction Property of Equality