It has been almost two years since you joined BB. Jeff has really appreciated your hard work at BB, but he thinks you still have room to increase your skills. Given your seniority and experience, he wants to nominate you to become the team leader of a trainee team. When a team leader position opens up, you will be eligible to apply. Your performance during the observation period is crucial for upper management to make the promotion decision. However, if you fail, you may be fired.

The first task during your observation period is to evaluate the productivity of three Green Shampoo production lines in three different plants. Line 1 can produce 5,000 bottles per week, with 5 workers working 10 hours per day, 5 days per week. Line 2 can produce 10,000 bottles per week, with 10 workers working 8 hours per day, 5 days per week. Line 3 can produce 6,000 bottles per week, with 8 workers working 8 hours per day, 6 days per week. Rank the three lines based on their productivity.