General Medicine General d61def91 Exposure to ultraviolet light directly facilitates which of the following? A Conversion of 7 dehydrocholesterol to 25-hydroxycholecalciferol B Conversion of 25-hydroxycholecalciferol to 1,25- dihydroxycholecalciferol C Transpo of calcium into the extracellular fluid D Formation of calcium-binding protein