What is the relationship between Tencent and WeChat in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.
Text: Tencent said on its official WeChat blog that the security flaw affects WeChat 6.2.5, an old version of its popular chatting app, and that newer versions were unaffected.
user
subsidiary
assistant