Which sentence is correctly punctuated?
a. We need the following items to sew a dress: fabric, a pattern, and a sewing machine.
b. To sew a dress, we need: fabric, a pattern, and a sewing machine.
c. Fabric, a pattern, and a sewing machine are: what we need to sew a dress.
d. We need these items to sew a dress fabric, a pattern, and a sewing machine.