
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
In a triangular-shaped sequence of numbers, where the first row has 1 number, the second row 3 numbers, the third row 5 numbers, and so forth, what number is directly above $198$?
```
     ...
    168  169  170  171  ...   198
```
A) 168
B) 169
C) 170
D) 171

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