
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
If $N$, written in base $3$, is $2101$, the integer immediately preceding $N$, written in base $3$, is:
A) $2102_3$
B) $2002_3$
C) $2100_3$
D) $2110_3$
E) $2001_3$

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