Triangle ABC is congruent to triangle A′′B′′C′′ . Which sequence of transformations could have been used to transform triangle ABC to produce ​ triangle A′′B′′C′′ ​ ? ​ A. Triangle ABC ​ was reflected across the x-axis and then translated 9 units right. B.​ Triangle ABC ​ was reflected across the y-axis and then translated 7 units down. ​ C. Triangle ABC ​ was translated 7 units down and then 9 units right. ​

D. Triangle ABC ​ was translated 10 units right and then reflected across the x-axis.
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