Task: Question Answering
Input (English): Problem: a store reduced the price of all items in the store by 10 % on the first day and by another 10 % on the second day. the price of items on the second day was what percent of the price before the first reduction took place ?
Options: a. 80.0, b. 80.9, c. 81.0, d. 81.1, e. 81.9
Output (English): c