Classify the following activities as planning (P), implementation (I), or control (C).

1. Estimating the number of units that will be sold in the upcoming quarter.

2. Assigning production line workers to stations in the production plant.

3. Choosing between manual labor or purchasing a machine that will automate the production process.

4. Preparing a performance report which compares actual sales to budgeted sales for the last month.

5. Solving a bottleneck issue in the production plant by moving one production line worker from station 2 to station 5 on the production line.

6. Negotiating discounts with suppliers for materials needed in the production process.