
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 full container started with all water is emptied in a sequence where:
1. One third of the water is poured out initially.
2. In each subsequent pouring, the next fraction (one fourth, one fifth, etc.) of the remaining water is poured out.
Determine the number of pourings required to have exactly one fifteenth of the original amount of water left in the container.
A) 26
B) 27
C) 28
D) 29
E) 30

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