An employer needs to make a hiring decision and bring new employees on board. Some preliminary research indicated that 14 of the pool could bring $50,000 value to the company, 14 $60,000, 14 $70,000, and 14 $80,000. Assuming asymmetric information and adverse selection (you don't know what value new employees could bring) what kind of job offer the company should consider in order to hire 4 new employees?