Even if the most stringent pesticide residue standards are implemented, there are still risks. However, if zero residue standards are implemented, humans will face a greater risk of food shortages. Therefore, the formulation of standards requires a comprehensive balance between the cost of pesticide residues and the pesticides The yield of crops is increased. This is a trade-off between total social costs and total benefits, and is a by-product of humankind's pursuit of maximizing the overall welfare of society. What cannot be said from the passage? ['Implementation of zero standards for pesticide residue inspections is unlikely in practice.', 'Human decisions need to be weighed against total social costs and benefits.', 'Residual pesticides in crops are actually good for solving food shortages.', 'Crops containing certain pesticide residues are the last resort for humans.']