Multi-select problem: How does the next paragraph end?

The model poses by kneeling on her right knee and bending sideways by supporting herself on her right arm. the instructor

Options:
(A). then begins their exercise routine similar to that of the model in mid oval back..
(B). continues instructing them in a classroom and leads into them bumping heads together..
(C). adjust her foot to show the correct posture for yoga..
(D). instructor instructs the bride and groom on how to move gracefully..
(C).