Which is a true statement about the triangles?L1814N2127KMAJLN AMKN by Side-Angle-Side(SAS) similarityAJLN ~ AKMN by Side-Angle-Side(SAS) similarityAJLN ~ AKMN by Side-Side-Side(SSS) similarityO The triangles are not similar.

We have two triangles that have a common vertice.
So
[tex]\measuredangle JNL=\measuredangle MNK[/tex]because they are opposite angles by the vertex.
Now, we must check if the sides that form the angles are proportional.
[tex]\frac{\bar{MN}}{\bar{LN}}=\frac{\bar{KN}}{\bar{JN}}[/tex][tex]\begin{gathered} \frac{27}{18}=\frac{21}{14} \\ 1.5=1.5 \end{gathered}[/tex]So, they are proportional.
That means that the triangles are similar by Side-Angle-Side similarity. The first option is true.