Walter, a single taxpayer, purchased a limited partnership interest in a tax shelter in $1996.$ He also acquired a rental house in $2023,$ which he actively manages. During $2023,$ Walter's share of the partnership's losses was $$30,000,$ and his rental house generated $$20,000$ in losses. Walter's modified adjusted gross income before passive losses is $$120,000.$ If an amount is zero, enter $"0."$ Question Content Area a$.$ Calculate the amount of Walter's allowable loss for rental house activities for $2023.$ fill in the blank $1$ of $1$$ Question Content Area b$.$ Calculate the amount of Walter's allowable loss for the partnership activities for $2023.$ fill in the blank $1$ of $1$$ Question Content Area c$.$ What may be done with the unused losses, if anything? The unused losses may be carried to reduce income in those years.