Case Study: You are the director of a state social welfare department. Audits reveal that nearly 30% of disability pension beneficiaries in a particular district are fraudulent, enabled by fake medical certificates issued by corrupt government doctors. Stopping pensions immediately without re-verification will cause severe hardship to genuine destitute beneficiaries who depend on it for survival. (a) What are the ethical challenges in rectifying welfare leakage? (b) Outline a humane and foolproof plan of action to weed out fake beneficiaries.