Need Help in the following multiple choice select the correct

Restaurateur Daniel Valentine is evaluating the feasibility of opening a restaurant in Richmond. The Chamber of Commerce estimates that `Richmond families, on the average, dine out at least 3 evenings per week'. Daniel plans to test this hypothesis using a random sample of 81 Richmond families. His alternative hypothesis is Select one: Oa. U23 O b. n = 81 OG. O