一道英语听力题目-----听对话回答问题

一道英语听力题目-----听对话回答问题
磁带里读的内容是这样的：
A:What time is it now?
B:It's 三个发音为/tu:/的单词.
A.Let's hurry.The train will leave in half an hour.
When will the train leave?
我的几个朋友有三种不同的答案：
(1)
B说的那句话是It's two two two.意思是2点02分02秒,半小时以后应该是2点32分02秒
所以回答：It will leave at two thirty-two.或It will leave at two thirty-two two.
(2)
B说的那句话是It's two two two.意思是2点22分,半小时以后应该是2点52分
所以回答：It will leave at two fifty-two.或It will leave at two five two.
(3)
B说的那句话是It's two to two.意思是1点58分,半小时以后应该是2点28分
所以回答：It will leave at two twenty-eight.或It will leave at twenty-eight past two.
这三个答案中,哪一个是正确的?并说明理由.