During the business call, if you are not so sure about the information, you can say the following sentences except ________

A、“IbelieveIamright.”;
B、“Ididn'tcatchyourname.Wouldyoupleasespellit?”;
C、“Couldyouspellthat,please?”;
D、“I'dlikeyoutorepeatthatnumber,please.”