The local operations manager for the IRS must decide whether to hire 1, 2, or 3 temporary workers. He estimates that net revenues (in thousands) will vary with how well taxpayers comply with the new tax code.

# of workers  low compliance     med. compliance    high compliance

1                             50                        50                           50

2                            100                       60                          20

3                            150                       70                         -10

If he uses the minimax regret criterion, how many new workers will he hire?