UCLA申请系统Area of Specialization里面为什么有重复？

RT，申请的ME方向下的System and Control
申请系统Area of Specialization(*)下拉，里面就有：

0279 Systems and Control (MS/PHD)
0381 Systems and Control (MS)
0330 Systems and Control (MS/PHD)

这个得选哪个= =，而且这个下拉菜单里还有各种土木，电子，生物的选项。。。