sell,buy Explanation: Suppose that Japan wishes to use sterilized market intervention to devalue the yen.Japan's central bank would sell yen and...

C. sell, buy

Explanation:

Suppose that Japan wishes to use sterilized market intervention to devalue the yen. Japan's central bank would sell yen and simultaneously buyJapanese treasury securities. This is because the action of Japan's central bank selling of the Yen buying of the Japanese treasury securities increases the money supply in the Japan economy consequently decreasing the value of yen thus devaluing their currency.