It’s impossible to find a place to park before the class obtained.急

It’s impossible to find a place to park before the class obtained.急
M:It’s impossible to find a place to park before the class obtained.
W:Yeah,we seem to make more parking areas here.
Q:What can we learn from the conversation?
这是08年上海高考题听力原文
他的选项是：
A.There are not enough gardens.B.Parking areas are full before 10:00.
C.Parking areas are closed after 10:00.D.All classes begin at 10:00.
有点不明白the class obtained和十点有什么关系，我怀疑原文出错了，obtained会不会是at ten。
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我去找听力听了，应该是It’s impossible to find a place to park before the class at ten.
居然网上绝大多数的08年真题听力原文都是错的，orz。
这句话是不是可以解释为：在十点的课之前找到一个地方停车是不可能的。
分数给第一个正确回复这条的人吧。