Ken is a paying resident at the Twin Oaks Senior Center. He is often seen making ethnic slurs at Chia, a Korean employee. He also refuses to be served or helped by her and others of the same national origin as Chia. Sometimes, he even complains to the other residents that Chia is not qualified for her job and needs to be replaced. Chia reports this to her supervisor who immediately takes action to prevent, to stop, and to correct the harassment. Nonetheless, Chia files a complaint of national origin discrimination. Which of the following holds true in this scenario?

Twin Oaks Senior Center is not liable to Chia because the Fair Labor Standards Act $($FLSA$)$ allows employers to discriminate in favor of U$.$S$.$ citizens.

Twin Oaks Senior Center is not liable to Chia because it took action to stop the harassment.

Twin Oaks Senior Center is liable to Chia because Title VII of the Civil Rights Act of $1964$ provides protection against discrimination based on country of citizenship.

Twin Oaks Senior Center is not liable to Chia because her case does not involve any physical harassment.