Provide the reasons for the following proof.

Given: JK = KL, NK = KM
Prove: NKJ = MLK
Statements
1. JK = KL,NK=KM
2. JKN=LKM
3. NKJ=MLK
Reasons
1. Given
2. _______
3. _______

A. Reflexive property of = ; SAS
B. Reflexive property of = ; ASA
C. Vertical angles are congruent; ASA
D. Vertical angles are congruent; SAS

The reasons for the proof are:

2. Vertical angles are congruent; ASA
3. Vertical angles are congruent; SAS

The correct answer is D.