A.
On the eve of the Spring Festival, people in the north choose jiaozi, saying goodbye to the old year and welcoming the new year.since jiao(dumpling)sounds jiao(alternation)
B.
On the eve of the Spring Festival, people in the north choose jiaozi, meat and vegetable dumplings, at family reunion--bidding farewell to the old year and welcoming the new year.(since jiao(dumpling)sounds jiao(alternation))
C.
On the eve of the Spring Festival, people in the north choose jiaozi. They will say goodbye to the old year and welcome the new year, Jiao(dumpling)sounds jiao(alternation)