i need help....please

If you Fourier sample the state 1/√22(|000>−|001>+|010>−|011>+|100>−|101>+|110>−|111>), which of the following states can be the outcome of your measurement? Select all that apply.

1. |000>
2. |001>
3. |010>
4. |011>
5. |100>
6. |101>
7. |110>
8. |111>

2 answers

please answer this question
do you have any clue about this?