A craft chocolate producer considers hiring one extra worker in production. Currently, the shop is selling 200 chocolate bars per day at a price of $6. With one extra worker, the manager estimates that they would be able to increase the output to 250 chocolate bars per day and that they would need to lower the price to $5.50 in order to sell them. The daily salary of this new employee would be the same as for the existing ones: $150. What should the manager do?

1. Turn down the new worker and maintain the same number of employees

2. Increase its selling price

3. Increase the salary of all employees

4. Reduce the number of workers working in his chocolate place

5. Hire the extra worker