Can't answer your question, but agnosticism is usually seperated in types called "strong" (can't know), "weak" (unknown right know, but that might change), and "apathetic" (can't/don't know and don't care).

There is no 'the answer'... or we don't know 'the answer'... or we don't know if there is a 'the answer'... or we don't know if we can know the 'the answer'? 4 kinds of agnosticism, all different.

Your first one sounds more similar to atheism, rather than agnosticism, since it is an active denial of an answer/god. The other 3 to me look like slight variations of weak agnosticism, basically that we don't know right now, but if other facts present themselves we'd adjust our opinion.

Wait until you read about theological noncognitivism and you start questioning the questions.