
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 certain school, there are $50$ students, where $35$ students own a dog and $40$ students own a cat. Each student owns at least one pet (either a dog or a cat or both). How many students own both a dog and a cat?
A) 15
B) 20
C) 25
D) 30

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