1. When dealing with externalities, how can we correct markel failure? a. In the case of positive externalities. the market cun correct it, but in the case of negative externalities. government regulation is necessary. b. In the case of negative externalities. the market can correct it. but in the case of positive externalities, government regulation is necessary c. In the case of both positive and negative externalities, government regulation is necessary to induce market participants to internalize the externality. d. In the case of both positive and negative externalities, market can correct all market failures