Which of the Following Statements Is a Correct Example of Surface-Level

Which of the following statements is a correct example of surface-level diversity?

A) Bill and Lisa are male and female,with differing educational experience and communications skills.As they work together,they discover that they have far more differences than similarities in personality.
B) Bill and Lisa appear to have nothing in common at first,but as they get to know one another,they share many similarities in personality,outlook,work ethic and values.
C) Bill and Lisa appear to have a great deal in common,and their similarities in ethnicity and age developed into a close working relationship in their time with the company.
D) Bill and Lisa cannot stand each other.