Which is most important to include in a summary of this article? A.Pizza was introduced to the U.S. by Italian immigrants in the late 1800s and early 1900s. B.A pizzeria on Spring Street in New York City has been open for more than a century. C.Filippo Milone arrived in the U.S. and opened several pizzerias that he later sold. D.Food historians got a big surprise from researcher and writer Peter Regas in 2019.

D.Food historians got a big surprise from researcher and writer Peter Regas in 2019.