Shantel and Cornell are married and normally file a joint return. For $2022,$ under

which of the following circumstances, if any, are they not required to file a tax

return?

If Shantel is $64$ and Cornell is $66$ and their gross income is $$29,000.$

If Shantel and Cornell are both $35,$ have one dependent, and their gross income is

$$29,000.$

If Shantel is $64$ and Cornell is $66,$ Cornell is blind, and their gross income is $$29,000.$

In all cases $($a$,$ b$,$ and c$),$ they must file a tax return.