what does the sensuous quality of this piece suggest was its inspiration?

[the painting is "venus of urbino"]
i know for a fact it is not b or c on its own. so is it all of the above or just classic mythical beauty as well as flesh-and-blood beauty?

a.
classic mythical beauty as well as flesh-and-blood beauty
b.
purity and simplicity
c.
the beauty of a woman
d.
all of the above