A business decided to evaluate whether or not it sells more video games when it advertises than when it doesn't in order to cut back on any unnecessary costs. It decided to conduct a study concerning revenue with and without advertisement What would be the null hypothesis in this study? A) There is a significant difference between revenues with and without advertisement. B) There is no significant difference between revenues with and without advertisement. C) The advertisements are not necessary for revenues . D) The advertisements are necessary for revenues