I would have 3 defined options but in a 2 stage question
1st stage: Remain in the EU or Leave the EU
2nd stage: should Leave win stage 1: EFTA/May's deal (something like that) or No deal Brexit
If leave wins stage 1, then the winning option in stage 2 gets a mandate, whether No Deal or EFTA etc.
This stops the ambiguity of the 1st referendum on what Leave meant whilst allowing people to vote on actual options and on the implications of those deals. Make it a legally binding Referendum, unlike the advisory 2016 Referendum.
Remain has to be an option as so much more information about what Brexit means and its implications have been unveiled by the last 2 or so years and in a democracy, voters/people are allowed to change their minds.