Which of the Following Is an Example of Reverse Discrimination

Which of the following is an example of reverse discrimination?

A) To make his Asian employees feel good, Mr. Jones, who is white, gave them higher bonuses than he gave his white employees
B) Olga's salary is $5000 less than that of her male counterpart.
C) Justine was promoted because the firm needed one French-Canadian manager.
D) Danielle thinks all whites are racists.