What is the behavior of a pool in a business process model? Note: There are 2 correct answers to this question.

What is the behavior of a pool in a business process model? Note: There are 2 correct answers to this question.
A . A sequence flow can cross lanes within its pool.
B . A pool acts as a container for the sequence flow between activities.
C . Business processes can be modeled in several pools.
D . A sequence flow can go outside the boundaries of a pool.

Answer: A,B