Appropriate Orbitals for Water

If one were to attempt a molecular orbital study of water, one might use the following orbitals in the basis set:

To place the protons symmetrically, one might define and so that and which would place the protons in the x-y plane symmetrically disposed about the +x-axis. Which of the following would be inappropriate representations of any of these orbitals?

Query, is the above answer set correct?