According to Taylor and Bain's Research, Which of the Following

According to Taylor and Bain's research, which of the following is probably the most important criterion in training the Indian call centers workers?

A) Teaching them to be polite to customers.
B) Allowing them the freedom to deviate from the scripted conversations that they have been given.
C) Training them so that their accents are not so distinctly Indian, so that customers are unaware that they are speaking to an offshore operator.
D) Keeping the workers in good shape so that they do not lose too many work days due to illness.