Discrimination or Stereotyping? (Scenario)

Discrimination or Stereotyping? (Scenario)
Jeremy, Amanda, Taylor, and Omar work in the design department at Casuarina which makes casual and fitness related clothing for the local market. The company has been up and running for over five years and is making profit. Now they are in the process of expanding to the Japanese market where Canadian brands and quality are highly valued. The company has from the beginning embraced diversity as the founders were from Ireland and Turkey. As the company expanded, more diverse and multicultural employees were brought in. There are one or two pockets of the company where talented Caucasian employees at times seem standoffish and keep themselves apart from the rest of the employees during breaks or social occasions.
-Amanda works as a technical support manager in the design department.Which of the following factors,if TRUE,could trigger certain stereotypes about Amanda among the standoffish group,though not necessarily reflecting the way they feel or think about her?

A) Amanda does not believe in engaging in gossip about her coworkers.
B) Amanda prefers working late every evening to working over the weekend.
C) Amanda has a Swedish mother and an African American father.
D) Amanda tends to dominate discussions among her coworkers.