What are the responsibilities of the product owner in release and sprint planning? NOTE: There are 2 correct answers to this question.

What are the responsibilities of the product owner in release and sprint planning? NOTE: There are 2 correct answers to this question.
A . Analyse the functional and technical dependencies between user stories
B . Prioritize backing user stories by business priority
C . Define objectives for each release
D . Estimate the backing user stories

Answer: B, C