This option refuses to acknowledge the glaring issues with the first referendum. Not only did the Vote Leave campaign break campaign laws, but high-profile Brexiteers lied extensively.
As a result, the first in/out vote was not legitimate. We cannot move onto the 'how' until we have clarified the decision in binary in/out terms.
It also doesn't account for shifting public opinion. Given polling now indicates more people would prefer to remain in the EU than accept the terms on offer in Theresa May's deal or invoke a hard Brexit, the original question should be revisited.