Riley $(69)$ and Alanat $($eS$)$ are married, but lived apart for the last $11$ months of the year and filed separibe raturns Rileys

gross income $($including one$-$half of his social security$)$ for $2023$ was $523,500.$

Up to

of Riley's social security benefits may let taxable.

$50\%.$

$85\%.$

$100\%.$