
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
The points \( S, T, U \) lie on the sides of the triangle \( PQR \) such that \( QS = QU \) and \( RS = RT \). Given that \(\angle TSU = 40^\circ\), what is \(\angle TPU\)?

A) \(60^\circ\)  
B) \(70^\circ\)  
C) \(80^\circ\)  
D) \(90^\circ\)  
E) \(100^\circ\)

Present the answer in LaTex format: \boxed{Your answer}
user