How to use Bert algorithm for multiple choice questions and answers

I want to use the Bert algorithm which are pre trained model and also cdqa for multiple choice questions. Like this

You can take a look at:
https://tensorflow-prod.ospodiscourse.com/t/research-finetuned-language-models-are-zero-shot-learners-by-google-research/4206

As the mentioned OpenbookQA is a multiple choiche Q/A dataset and it is available at:

You can also see how hugginface is finetuning a model with the Keras API:

And an example of Bert on Multiplechoice (RocStories/SWAG dataset)