(B) is correct because the passage functions to show the failing of laws that prohibit the excavation and export of antiques in effectively allowing for the preservation of cultural knowledge. By highlighting the shortcomings of these solutions, it invites the adoption of new and more flexible solutions to achieve the goal of fully preserving cultural knowledge.
(E) is incorrect because it makes too strong of a claim. The passage does not explicitly state that more harm than good is done overall, Moreover, it is not clear that such harm can be attributed to the idea that a culture's artistic and cultural patrimony is the property of the state as opposed to the lack of enforcement or the inflexibility of the law.
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