Anna bought 3 bags of red gumballs and 5 bags of white gumballs. Each bag of gumballs had 7 pieces in it. Which expression could Anna use to find the total number of gumballs she bought?
(A) (7*3) + 5 =
(B) (7*5) + 3 =
(C) 7 *(5 + 3) =
(D) 7 + (5*3) =