WILL GIVE BRAINIEST TO THE CORRECT ANSWER!

(Please answer, and explain how you got the answer for the second step for statement 2.)

Select the correct reason for statement 2.

Prove: 1 + 3x + (x * 4) = 7x + 1

Statements Reasons
1. 1 + 3x + (x * 4) | 1. Given
2. 1 + 3x + 4x | 2. _________________
3. 1 + 7x | 3. Addition
4. 7x + 1 | 4. Commutative Property

A. Associative Property

B. Multiplication

C. Commutative Property

D. Addition