Heng tried to define a reflection across line rrr. Any point NNN on line rrr maps to itself. Any point MMM not on the line of reflection maps to a point M'M ′ M, prime such that the midpoint LLL of \overline{MM'} MM ′ start overline, M, M, prime, end overline is on line rrr. Which counterexample shows that Heng's definition does not fully define a reflection? Choose 1 Choose 1 (Choice A) A (Choice B, Checked) B (Choice C) C (Choice D) D Heng fully defined a reflection.