Judge the statement TRUE or FALSE according to the paragraph below.根据下面段落的信息判断句子正误。When“dirt sensor” finds things to clean up, it will flash a green light.The machine has a “dirt sensor” and flashes a blue light when it finds things to clean up. Only when it detects no more dirt does it stop going over the same area and, eventually, conclude that the whole room is clean. It then trundles back to dock at its recharging station. On the whole it does a good job.

A. 对
B. 错