According to the Regulations of People's Republic of China (PRC) on Foreign Exchange Management, foreign exchange consists of the following categories: ① foreign currency cash, including banknotes and coins; ② Foreign currency payment vouchers or payment instruments, including bills (option A), bank deposit vouchers (option D) and bank cards (option B); (3) Foreign currency securities, including bonds (option C) and stocks; (4) Special drawing rights; ⑤ Other foreign exchange assets.

See pages 57-58 of the textbook.