Do I have to write separate check for Citizenship?

[ojx111]

My wife and I are ready to apply for citizenship. As I know, the fee is $320 for N-400.
I think I need to include another $70 for fingerprint. Am I correct here?

Do I write one check $390 ($320 + $70) or two separate check?

Can I write one check for both my wife and I? Do I have to write separate one?

Thanks,

Oujia

[immihelp]

Write 2 checks per person.