
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 diagram shows a square divided into strips of equal width. Three strips are black and two are grey. What fraction of the perimeter of the square is grey? 

A) $\frac{1}{5}$  
B) $\frac{1}{4}$  
C) $\frac{4}{25}$  
D) $\frac{1}{3}$  
E) $\frac{2}{5}$

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