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Start the planThe claim that inventors sometimes serve as their own engineers plays which one of the following roles in the argument?
A. It separates the practical and theoretical aspects of the argument
B. It indicates that the problem identified in the argument does not arise in every instance
C. It supports an earlier statement regarding what is at issue in the argument
D. It concedes that a distinction on which the argument relies is unclear
E. It introduces an alternative solution to the problem the argument is addressing
The OA is B













