Only three athletes can go in the Marathon but there is a potential solution which could possibly allow all four to go the Olympics. The OCI will have to make a decision which could possibly be based on "first come first served" or even the three fastest times.
The "right" way to do it would be to select on the basis of who will perform best in the actual race. And that requires the judgement of Solomon. Someone will get left out and it could get pretty acrimonious......although it has not happened in Athletics, am I right in thinking that there was an acrimonious dispute fouror eight years ago in one of the two-man sailing classes?
Indeed it could all get very nasty.
People need a "Plan B" possibly thru a "B Standard Qualification" in the 10,000 metres. If one athlete was to get that standard and having already obtained "A" standard at Marathon, I would expect AAI to nominate that athlete for 10,000 metres....and Id expect the OCI to agree.