Triangles \triangle KLM△KLMtriangle, K, L, M and \triangle ABC△ABCtriangle, A, B, C are congruent. The side length of each square on the grid is 111 unit.

Which of the following sequences of transformations maps \triangle KLM△KLMtriangle, K, L, M onto \triangle ABC△ABCtriangle, A, B, C?
Sequence A Sequence B
A translation 999 units to the left and 777 units down, then a reflection over the line with slope -1−1minus, 1 through point CCC. A reflection over the line \overleftrightarrow{KL}
KL
K, L, with, \overleftrightarrow, on top, then a translation 333 units to the left and 111 unit down.