The computer works very fast, ( ) millions of data with the sp

The computer works very fast, ( ) millions of data with the speed of light.
A、being handled
B、handling
C、having handled
D、to be handled
【正确答案】：B
【题目解析】：分词做伴随状语，句子含义是这部电脑运行很快，飞速处理数百万的数据。