Shawna, a married $29-$year$-$old $,$ deferred $10\%$ of her salary or $$10,000,$ into a $401($k$)$ plan sponsored by her employer this yearHer husband, age $31,$ was unemployed all year and did not receive unemployment compensation Assuming Shawna has no other income $,$ what is the maximum contribution Shawna's husband can make to his Roth IRA for $20237,500$ $$1,000$ $$6,500$