The question which __________ at the conference now is very important A) is discussed B) was discussed C) were discussed

The question which is being discussed at the conference now is very important.

Is the question which being discussed at the conference now is very important?

What is being discussed at the conference?

What is very important now?

Is the question or are the questions which being discussed at the conference now is very important?

Is the question which being discussed  or being presented at the conference now is very important?

Is the question which being discussed at the conference now or today is very important?

Is the question which being discussed at the conference now is very important or unimportant?