Sandi buys a lot of health food from a company that charges 3% on each item for shipping if he purchased a premium membership for $45 a year the shipping would be free. He wants to know how much food he would have to buy each year so that the cost of the membership would be the same as the cost of the shipping charges without the membership what equation does this situation model

A) 1.03x = 45
B) x = 0.03x + 45
C) x + 0.03 = x + 45
D) x + 0.03 = 45