Answer:
The correct answer is A. AAS
Explanation:
B. SAS is wrong because this theorem states that two triangles are equal if two sides and an included angle between those two sides are equal.
C. ASA is also wrong because this theorem says that two triangles are congruent if any two angles and their included side are equal in the two triangles.
D. Finally, this theorem is also wrong because states that if the three sides of one triangle are congruent to the three sides of another triangle, then these two triangles are congruent.
Therefore, the correct answer is A. AAS.