
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
Define the sequence $\{b_n\}$ by the rule:
- $b_1 = 5$
- $b_{n+1} = b_n + 3n$

Determine the value of $b_{50}$.
A) 3655
B) 3675
C) 3680
D) 3695
E) 3710

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