Which sentences use a colon correctly?

choose all answers that are correct.

a.
we plan to visit the following cities in italy: florence, rome, and naples.

b.
donate the following: canned goods, winter coats, and blankets.

c.
today we learned about these quadrilaterals: squares, rectangles, and parallelograms.

d.
the plants they plan to grow this summer are: squash, cucumbers, and lima beans.

e.
these tickets are for: christy, maria, and phillipa.