
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 local bookstore decides to increase the price of a particular book by a certain percentage to cover additional costs and then decides to offer a discount by the same percentage during a special sale. If the sale price of the book ends up being 75% of the original price, find out the percentage by which the bookstore increased and then decreased the price of the book.
A) 40%
B) 45%
C) 50%
D) 55%
E) 60%

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