【单选题】WebSocket 协议由哪个组织负责开发[1.0] prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
WHATWG prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
B.
W3C prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
C.
IETF prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>