
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
A store generally sells windows at $120 each. This week, the store is offering one free window for each purchase of five. If someone buys 10 or more windows altogether, the store offers an additional 10% discount on the total price. Alice needs 9 windows and Bob needs 11 windows. How much money will they save if they purchase the windows together rather than separately?
A) $50
B) $84
C) $100
D) $150
E) $200

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