
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 $n$ be a 4-digit number. When $n$ is divided by $50$, let $q$ be the quotient and $r$ be the remainder. Determine how many values of $n$ there are such that $q + r$ is divisible by $11$.
A) 880
B) 899
C) 900
D) 950

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