Which of the following is not true of korean maebyeong bottles?
a.
korean potters used a celadon-high fired glaze of pale, bluish green hue to make maebyong bottles.
b.
korean pottery rivaled the best chinese court ceramics.
c.
maebyeong bottles were made of different materials and qualities so that everyone would be able to own one.
d.
many examples were found in an artificial cave temple.