Mla opens a coffee shop in the first week of January. The function W(): 0.0023 0.012 models the total number of customers visiting the shop since it opened after x days. She then opens an ice cream parlor in the month of February. The function R() = 12 - 4x + 13 models the total number of customers visiting the parlor since it opened after x days. Which function represents the difference of the number of customers visiting the two shops? OA. D(x) = 0.002r3 +1.012 - 4x + 13 = OB. D() = OC. D(r) = 0.002x3 - 0.99x2 0.0023 1.012 + 4x 13 - 4x+13 OD. D(x) = 0.0023 +0.99x2 + 4x - 13