阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。
(2013·苏锡常镇四市二调，C)
Global Positioning Systems are now a part of everyday driving in many countries. These satellitebased systems provide turnbyturn directions to help people get to where they want to go. But they can also cause a lot of problems, sending you to the wrong place or leave you completely lost. Many times, the driver is to blame. Sometimes a GPS error is responsible. Most often, says Barry Brown, it is a combination of the two.
