Why does the author include details about the Lins meeting their daughter’s homeroom teacher in "The All-American Slurp"?

to illustrate the differences between teachers in China and America

to show the Lins becoming Americanized while maintaining their Chinese customs

to introduce an important character who shows favoritism toward their daughter

to emphasize the Lins’ expectations of their children to make the honor roll
i payed 50 for this