Assume the vitamin industry is perfectly competitive. When a new medical study shows that taking vitamins does not effect the quality and length of life as much as previously believed, demand for vitamins decreases. What would happen to vitamin producers’ profits in the short run and the long run? Profits will [increase, decrease, stay the same] in SR. In LR, some ["existing, new] firms will [enter, exit] , driving [up, down] the price until profits are [positive, negative, back to zero

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