Please answer all parts of the question, no need to show work only answers

Do consumers spend more on a trip to Store A or Store B? Suppose researchers interested in this question collected a systematic sample from 85 Store A customers and 81 Store B customers by asking customers Store A Store B for their purchase amount as they left the stores. The data collected is summarized by the accompanying table. Suppose researchers decide to test the hypothesis that the means are equal. The degrees of freedom 85 81 formula gives 164.00 df. Test the null hypothesis at a = 0.01. 41 20 19 Identify the null and alternative hypotheses. Choose the correct answer below. O A. HO: HA - HB = 0 HA : HA - HB # 0 O B. HO: HA - HB = 0 HA : HA - HB > 0 O C. HO: HA - HB = 0 HA : HA - HB