I think it would be D. because your hypothesis wasn't correct.
Answer:
mitochondria, ribosomes, and vacuoles
Explanation:
chloroplasts and cell walls are only found in plants .
though rare, vacuoles are found in animal cells as well as plants .
mitochondria and ribosomes are in both types of cells .
The cell wall because of the fact it is present in the plant cell and not in the animal cell