Are you serious? That is simply not going to do it, since this is actually begging the question, presuming the very thing that needs to be proved, that "you" here refers to Rome and uniquely so.
Meanwhile even being a man who can preach the word of God does not mean he always will be speaking it based upon a criteria/ formula that he comes up with to assert that he is.
Which is what Rome did. For she has presumed to infallibly declare she is and will be perpetually infallible whenever she speaks in accordance with her infallibly defined (scope and subject-based) formula, which renders her declaration that she is infallible, to be infallible, as well as all else she accordingly declares.
Official sites are sites supported by LDS officials unless said official sites are considered unofficial by said officials.At that point such sites are unofficial unless officially referenced for official purposes by officials who can do so officially.This should not be misconstrued as an indication that official sites can be unofficially recognized as official nor should it be implied that unofficial sites cannot contain official information, but are not officially allowed to be offical despite their official contents due the their unofficialness.Official sites will be official and recognized as official by officials of the LDS unless there is an official reason to mark them as unofficial either temporally or permanently, which would make the official content officially unofficial.This is also not to imply that recognized sites, often used on FR by haters and bigots cannot contain official information, it just means that content, despite its official status, is no longer official and should be consider unofficial despite the same information being official on an official site elsewhere.Even then the officialness my be amended due to the use of the unofficial information which may determine the officialness of anything be it official or unofficial depending on how and where it is used officially or unofficially.