Need Help in the following multiple choice select the correct

Vincent is investigating employee absenteeism at the Wine (population 1) and the Beer (population 2) Factories. Past investigations demonstrate no distinction in employee absenteeism at the two factories. (The mean number of days missing per employee was the equivalent at every factory.) Vincent plans to test this hypothesis utilizing a random sample of 49 employees from each factory. His null hypothesis is Select one: O A. /1 - /2 50 O B. # 1 - H2 20 O C. HI - 12 0 O D. #1 - H2 = 0