There is no mandatory XML declaration above xxxyyy@live.com xxxyyy@live.comhttps://www.youtube.com/watch?v=euf-GKJV2S8&t=80s{349c5851-65df-11da-9384-00065b846f21} TrueTrue10624/http://localhost:587...... C tag is opened. B tag is closed after C was opened...tag was closed after closed A. C tag was closed after closed D...