First Southern Community Bank Has Long Tried to Differentiate Itself

First Southern Community Bank has long tried to differentiate itself as,"your friendly,hometown bank." However,the bank president has been concerned about a number of recent customer service complaints.Which of the following approaches would probably be best to get a feel for how friendly her employees really are to customers?

A) employee focus-group interview
B) mail questionnaire of a sample of current customers
C) mystery shopper
D) experiential research
E) an Internet based community study