Someone please help! 15+ points, no links. <3 (Ill give brainliest to correct answer)
Which of the following best describes the expression 9(x + 7)?
Select one:
a. The sum of constant factors 9 and x + 7
b. The product of constant factors 9 and x + 7
c. The product of a constant factor 9 and a 2-term factor x + 7
d. The sum of a constant factor 9 and a 2-term factor x + 7