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. d, a, c, b
B. a,c,b,d
C. a, b, c, d
D. c, a, b, d
E. c, b, a, d