The question asks for a single student who correctly identified pairs of equations with the same solution. Petra is the only one who did this correctly by identifying equations B and C. Therefore, she is the most appropriate choice for correctness, although Dayton also stated a true point about the unique solutions of all equations.
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However, since the question asks for a single student who is correct regarding the solution sets being the same, Petra is the only one who correctly identified at least one pair of equations with the same solution (B and C). Thus, Petra is the student most appropriately recognized for correctness, while Dayton also holds a true statement about the unique solutions across all equations.
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