If all prices increase by 20%:

A、the Paasche price index increases by more than 20% and the Laspeyres price index increases by less than 20%
B、the Laspeyres price index increases by more than 20% and the Paasche price index increases by less than 20%
C、both the Paasche price index and the Laspeyres price index increase by more than 20%.
D、both the Paasche price index and the Laspeyres price index increase by exactly 20%.