- Hello, I'm Harry Potter. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> - Hello, my name is Charles Green, but ______. A. A.call my Charles prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> B. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> B.call me at Charles C. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> C.call me Charles D. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> D.call Charles me