Which of the following taxpayers can use the standard deduction?

Question $6$ options:

a$.$ Zeke, who files a separate return from his wife Yasmine. Yasmine itemizes deductions on her return.

b$.$ Xavier, who is a nonresident alien.

c$.$ William, who files a tax return for less than $12$ months because he changed his annual accounting period.

d$.$ Violet, whose divorce from Ugo was finalized this year and in the past they always itemized deductions.