Amy and Stephanie were playing a number game. Amy picked a number and told Stephanie that if she added 7 to the number and multiplied the sum by 4, it would equal 8. Which equation could Stephanie use to find the number, x?
A.7(x + 4) = 8
B.4(x + 7) = 8
C.4(x) + 7 = 8
D.4 + (x + 7) = 8