
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
Evaluate the expression $3^{-2k} - 3^{-(2k-2)} + 3^{-(2k+1)}$.
A) $-\frac{23}{3} \cdot 3^{-2k}$  
B) $-\frac{23}{3} \cdot 3^{-(2k-1)}$  
C) $-\frac{23}{3} \cdot 3^{2k}$  
D) $-\frac{23}{3} \cdot 3^{-2k+1}$

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