What is the most important provitamin A carotenoid is beta-carotene

Info Source:http://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/

By far the most important provitamin A carotenoid is beta-carotene; other provitamin A carotenoids are alpha-carotene and beta-cryptoxanthin. The body converts these plant pigments into vitamin A.