
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
Using each of the four digits $1$, $3$, $6$, and $8$ exactly once, twenty-four different $4$-digit numbers can be compiled in numerical order from smallest to largest. Identify the number that appears in the $15\text{th}$ position from this ordered list.
A) $6138$
B) $6183$
C) $6318$
D) $6831$
E) $6813$

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