Which sentence uses punctuation correctly?

Question 9 options:

a)

For the art class, the students will purchase white, unlined paper, black charcoal, pencils, and watercolor paints.

b)

For the art class, the students will purchase white, unlined paper, black charcoal pencils, and watercolor, paints.

c)

For the art class, the students will purchase white, unlined paper; black, charcoal pencils; and watercolor paints.

d)

For the art class, the students will purchase white, unlined paper; black charcoal pencils, and watercolor paints.