1. A Phosphate Group: This is a negatively charged group containing phosphorus.

2. A Pentose Sugar: This is a five-carbon sugar. In DNA, the sugar is deoxyribose, while in RNA, the sugar is ribose.

3. A Nitrogenous Base: This is a molecule containing nitrogen that can be one of four types:

* Adenine (A)

* Guanine (G)

* Cytosine (C)

* Thymine (T) in DNA, or Uracil (U) in RNA

So, the answer is all of the above.