Which of the following actions is consistent with social responsibility and is not necessarily inconsistent with stockholder wealth maximization? OaDumping effluent discharge into a river, where it ruins the drinking water of the community around the plant. The installation of machinery to treat the effluents is very expensive Investing in a smokestack filter to reduce sulphur-dioxide emissions to decrease the tax being levied on the firm by the state for pollution it produces each year. O Selling a smokestack "scrubber" required by the firm's air pollution policy that is also mandated by law. Od Making a large corporate donation to the local community for funding a recreation complex that can be used by the firm's employees only O Consider taking over the competitor's business in an attempt to establish monopoly for its product in the market