There are various solutions you could look into, I wouldn't be able to give specifics though.
I'm sure you could do something from within qualtrics, I'm sure that's an option somewhere within qualtrics. When a worker clicks the link, they are taken to one of three versions. I hope these versions are relatively equal in length, it's not a good experience to see somebody take 2 minutes to complete a task and another take 10 minutes for the same pay.
You could publish three hits, and
explicitly state with big bold letters within the HIT title and within the hit itself that you can only do one of the three hits.
Hit Title A 1 - (You can only do One hit of the Hit Title series)
Hit Title B 2 - (You can only do One hit of the Hit Title series)
Hit Title C 3 - (You can only do One hit of the Hit Title series)
You can publish it one survey at a time, and assign qualifications to the workers who complete the first iteration as to prevent them from completing either the second or third surveys.
https://docs.aws.amazon.com/AWSMechTurk/latest/RequesterUI/AssigningaQualificationTypetoaWorker.html
TurkPrime will probably? solve that for you at a cost/less pay to workers:
https://www.turkprime.com/