Which two conditions follow the Fixed Rule Category?

Your company decides to set up a Lead Scoring model. They would like to score leads based on a condition.

Which two conditions follow the Fixed Rule Category? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.
A . based on age
B . clicking on an email advertisement
C . an event for which the contact registered
D . based on zip code

Answer: B,C

Explanation:

Reference: https://docs.microsoft.com/en-us/dynamics365/marketing/score-manage-leads