Art banks generally refer to the government's provision of financial support or policy guarantees to allow non-official cultural and artistic institutions to purchase works by outstanding artists, and then sublet or resell the works to government agencies, enterprises, and private use for display. Decorate, collect, etc. to get working capital for a non-profit art institution. According to the definition above, which of the following options belongs to the art bank? ['Bank A: Buying certain products and renting them out to earn rental spreads.', 'Bank B: Allow customers to use art as collateral when lending to customers.', 'Bank C: Produced and issued virtual financial products with artwork as physical assets.', "Ding Bank: can temporarily keep the collector's artwork and maintain the value of the collection."]