There is no reason why these options could not be put to Parliament in series.

The House of Commons works by having the government propose motions that can be passed or rejected. Motions are allocated time to be debated and other MPs can propose amendments. Finally a series of votes on the amendments and finally on the motion (amended or otherwise) are held.

The problem is that on all but one day a year only the government gets to decide which motions are going to be voted on. And the government is mostly controlled by the Prime Minister, and Ms. May only wants one outcome: her deal is accepted.

As such it's extremely difficult to get votes on the other options. The best hope is for amendments to be accepted supporting those options, but even then the Speaker of the House gets to decide which amendments will be put to the vote so it's not always automatically possible to have them attached to a government motion.

So it's entirely possible, just very unlikely due to Teresa May.

There is no reason why these options could not be put to Parliament in series.

The House of Commons works by having the government propose motions that can be passed or rejected. Motions are allocated time to be debated and other MPs can propose amendments. Finally a series of votes on the amendments and finally on the motion (amended or otherwise) are held.

The problem is that on all but one day a year only the government gets to decide which motions are going to be voted on. And the government is mostly controlled by the Prime Minister, and Mrs May only wants one outcome: her deal is accepted.

As such it's extremely difficult to get votes on the other options. The best hope is for amendments to be accepted supporting those options, but even then the Speaker of the House gets to decide which amendments will be put to the vote so it's not always automatically possible to have them attached to a government motion.

So it's entirely possible, just very unlikely due to Theresa May.