Are Triangles similar?

Given:
A figure of triangles.
To find:
Whether the triangles SPT and triangle QPR are similar.
Solution:
In triangle SPT and triangle QPR,
[tex]\angle PST\cong \angle PQR[/tex] (Given)
[tex]\angle SPT\cong \angle QPR[/tex] (Common angle)
In triangles SPT and triangle QPR, two corresponding angles are congruent. So, by AA property of similarity both triangles are similar.
[tex]\angle SPT\sim \angle QPR[/tex]
Therefore, yes, the triangle SPT and triangle QPR similar. Option A is correct.