Does standing from prone provoke a reaction (Opportunity Attack)

@JeremyECrawford Couldn't find an official ruling: does standing from prone provoke a reaction (OA) #DnD

— Sans Christopher (@SansChristopher) May 26, 2016

Check out the rules on opportunity attacks (PH, 195). They tell you what provokes such an attack. #DnD https://t.co/V2bItGmbfz

— Jeremy Crawford (@JeremyECrawford) May 26, 2016