A stand-up paddleboard outfitter operates without insurance. The outfitter's marginal cost of safety (e.g., staff training, rescue equipment) isMC_A= 100 + 14A. The marginal benefit of those actions is given byMB_B= 200 - 6A, whereAis the number of safety actions taken.

The government has mandated that all SUP outfitters carry insurance, leading to a change in the outfitter's marginal benefit curve toMB_B= 140 - 6A.

How does this government mandate change the efficient number of precautions taken by the outfitter? Solve for the number of precautions before and after the mandate.