
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
Margie visited the zoo and counted a number of two-legged birds, three-legged reptiles, and four-legged mammals. She tallied 300 heads and 798 legs in total. How many of the animals were three-legged reptiles?
A) 99
B) 102
C) 120
D) 150
E) 200

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