Answer: C

As collateral for loan guarantees, it can be physical assets such as real estate, machinery and equipment, transportation vehicles, land use rights that have the right to dispose of according to law, or It can be securities such as stocks, bonds, etc., and they must be assets that can be liquidated. The collateral used as loan guarantee can be credit certificates such as bills of exchange, checks, bonds, deposit slips, bills of lading, etc. It can be legally transferable shares, stocks and other securities, or it can be legally transferable trademark rights and patents. rights, property rights in copyright, etc. Therefore, securities such as bonds and stocks can be used as both collateral and collateral.