Which of the following is an example of an effect of the Vietnam War on Oklahoma in the 1970s?A.No Oklahomans were killed or wounded as servicemen in the Vietnam War.B.A 1972 mass student protest on Oklahoma State University’s campus caused National Guardsmen to shoot at protesters.C.Many South Asian refugees settled in Oklahoma, forming new communities in Oklahoma City.D.Oklahoma’s schools and universities were free from protests against the war.