What is the following product? (2 StartRoot 7 EndRoot + 3 StartRoot 6 EndRoot) (5 StartRoot 2 EndRoot + 4 StartRoot 3 EndRoot)
6 StartRoot 10 EndRoot + 16 StartRoot 2 EndRoot + 42
8 StartRoot 10 EndRoot + 30 StartRoot 2 EndRoot + 66
7 StartRoot 14 EndRoot + 6 StartRoot 21 EndRoot + 16 StartRoot 3 EndRoot + 21 StartRoot 2 EndRoot
10 StartRoot 14 EndRoot + 8 StartRoot 21 EndRoot + 30 StartRoot 3 EndRoot + 36 StartRoot 2 EndRoot

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality