ABC is a new (established 2002) asset management firm, and wishes to adhere to the GIPS standards. ABC is aware that this will entail significant input data requirements. These requirements will include:（）

A. calculating returns for each security based on the compounding convention of the security’s home market.

B. the capture and maintenance of daily price data for all securities held.

C. the valuation of portfolios on at least a monthly basis.