
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 class of $60$ students, each student is either blonde or brunette and either green-eyed or gray-eyed. If there are $20$ green-eyed blondes, $35$ are brunettes, and $25$ are gray-eyed, what is the number of gray-eyed brunettes?
A) 15
B) 18
C) 20
D) 22
E) 24

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