
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
Let $a$, $b$, $c$, and $d$ be positive integers with $a < 2b + 1$, $b < 3c + 1$, and $c < 4d + 1$. If $d^2 < 10000$, the largest possible value for $a$ is:
A) 2375
B) 2376
C) 2391
D) 2399
E) 2400

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