Which option identifies the best IPM method to reduce bacteria count in the following scenario? Meredith needs to treat a severely infected field before planting out a crop, to reduce common, soil-dwelling anaerobic bacteria that cause root rot, but can be destroyed by exposure to light and oxygen.

till the field twice before planting

rotate crops in the field the season before planting

saturate the field with an antibacterial solution

plant a trap crop near the field