Choose the Correct Order of Steps for the Synthesis of Vitamin

Choose the correct order of steps for the synthesis of Vitamin D. a. Inactive vitamin D is transported to the liver where it is modified.
B) Inactive, chemically altered vitamin D is transported to the kidneys.
C) UV light strikes the skin and converts a steroid molecule into an inactive form of vitamin D.
D) Vitamin D is activated under the influence of PTH.
A) a, b, c, d
B) c, b, a, d
C) c, a, b, d
D) a, c, b, d
E) d, a, c, b