问题描述：
[单选]
Custmoer:When did your company begin to undertake the CDMA mobile phone business？ CSR:China Telecom began to carry on the CDMA mobile phone business on the（）.
A．0t
B．1st 2008
C．Jan. 1st 2008
D．Fe
E．1st 2008
F．0ct. 1st 2008
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答案解析：无
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