An example of a$$ third$-$country national is a$\_\_\_\_\_\_\_\_.$

Question content area bottom

Part $1$

A$.$

Canadian citizen working for a U$.$S$.$ company in Canada

B$.$

U$.$S$.$ citizen working for a U$.$S$.$ company in Canada

C$.$

Canadian citizen working for a U$.$S$.$ company in Mexico

D$.$

dual citizen$($Canadian and U$.$S$.$ citizenship$)$ working for a Mexican company in Mexico