Exam contains 10 questions, it should be randomly selected from a pool of 17 questions.

Exam contains 10 questions, it should be randomly selected from a pool of 17 questions. The questions are divided into 4 topics:

 

Topics:

1. Section1 (Bank: 5 questions, use 3)
2. Section2 (Bank: 3 questions, use 2)
3. Section3 (Bank: 6 questions, use 3)
4. Section4 (Bank: 3 questions, use 2)

how to do this in storyline?