B is corrent because in end-user computing the user is responsible for the development and execution of the computer application that generates the information used by that same user. A is incorrect because decentralized computing suggests that processing (and data) are stored on computers at multiple locations, and it does not relate directly to a circumstance in which the end user is responsible as suggested in this question. C is incorrect because microcomputing is a term not frequently used, which presumably suggests using a microcomputer. D is incorrect because with distributed computing, transactions for a single database are processed at various sites and this does not relate directly to a circumstance in which the end user is responsible as suggested in this question.
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