Which of the following statement is wrong?

A. A utility function refers to a particular individual and reflects the tastes of that individual

B. When the tastes of an individual changes, his utility function changes(shifts)

C. Different individuals usually have different tastes and thus have different utility functions

D. Different individuals have same tastes and thus have the same utility function

Please do not use chat terms. Example: avoid using "grt" instead of "great".