
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
A series of linked rings, each 2 cm thick, are suspended from a peg. The topmost ring has an outside diameter of 20 cm. Each subsequent ring underneath has an outside diameter 2 cm less than the one directly above it. The smallest ring, at the bottom, has an outside diameter of 4 cm. Calculate the total vertical distance, in cm, from the top of the uppermost ring to the bottom of the lowest ring.
A) 32 cm
B) 36 cm
C) 40 cm
D) 44 cm

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