Which kinds of bonding can be found in a sample of $H2_O(l)$?

Question

$\begin{array}{1 1} \text{a) Hydrogen bonds only} \\ \text{ b) Nonpolar covalent bonds only} \\ \text{c) Ionic and nonpolar hydrogen bonds} \\ \text{d) Both polar covalent and hydrogen bonds} \end{array}$