Which is the correct way to write the following sentence?

I put my binder, a ruler, two felt pens, and a dictionary into my new, backpack.
A
I put: my binder, a ruler, two felt pens, and a dictionary into my new backpack.

B
I put my binder; a ruler; two felt pens, and a dictionary into my new, backpack.

C
I put my binder, a ruler, two felt pens, and a dictionary into my new backpack.

D
Correct as is