The fact that the pronunciation has changed more rapidly than sp

The fact that the pronunciation has changed more rapidly than spelling over the years results in ______.
A、more and more differences between sound and form
B、the conventional relationship between sound and meaning
C、the arbitrary symbolic connection between sound and meaning
D、the different sounds of the same concept in different languages
【正确答案】：A
【题目解析】：多年来，发音的变化比拼写的变化更快，这一事实导致了声音和形式之间越来越多的差异。