Task: Question Answering
Input (English): Question: 8 friends decides to eat pizza. 4 friends eat type 1 pizza which cost 100 each. Remaining friend buy pizza having off on it and saves 100 and each of them pay equal money .Total bill is 800. what is % of off on each pizza.

 Option A: 20%

 Option B: 30%

 Option C: 10%

 Option D: 15%

 Option E: 25%
Output (English): Option A