What do you have to keep in mind when working with configurable routings?

There are item categories that are only allowed in configurable BOMs.

What do you have to keep in mind when working with configurable routings? Note: There are 3 correct Answers to this question.
A . Equipment as production resources/tools may only be used in configurable routings.
B. All types of operation can be used in non-configurable and configurable routings.
C. All sequence categories can be used in non-configurable and configurable routings.
D. All production resources/tools catgories can be used in non-configurable and configurable routings.
E. Alternative sequences may only be used in configurable routings.

Answer: A,B,E