; and (ii) may use such returned amounts only for assistance under this paragraph. . (b) Authorization of appropriations There is authorized to be appropriated to the Secretary of Housing and Urban Development such sums as may be necessary for assistance under subtitle A of title II of the Cranston-Gonzalez National Affordable Housing Act ( 42 U.S.C. 12741 et seq. ), to be made available only for providing security deposit assistance under paragraph (4) of section 212(a) of such Act ( 42 U.S.C. 12742(a) ) (as added by the amendment made by subsection (a) of this section). 4. Study on alternatives to security deposits (a) Study The Secretary of Housing and Urban Development shall conduct a study to identify and analyze— (1) alternatives to rental housing security deposits, including products that require a tenant of a dwelling unit to pay a monthly insurance premium to cover costs of repairing damage to the dwelling unit; and (2) the impact that the alternatives described in paragraph (1) have on the rental housing market and tenants, including how the alternatives affect tenants based on tenant race, income, age, sex, disability, and other demographic characteristics. (b) Report Not later than 180 days after the date of enactment of this Act, the Secretary of Housing and Urban Development shall submit to Congress a report setting forth the findings and conclusions of the study conducted under subsection (a).