Which reason is not necessary to explain how you can find the distance across the lake? Two right triangles are drawn and the top points of each triangle are touching. They each have a congruent side.

A.
ASA Congruence Theorem

B.
Vertical Angles Congruence Theorem

C.
Corresponding parts of congruent triangles are congruent.

D.
Right Angles Congruence Theorem

E.
SAS Congruence Theorem