According to a recent WSJ article, "Hamas Needed a New Way to Get Money From Iran. It Turned to Crypto,"

to increase user privacy, the Gaza money exchanges often changed the $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ they used each day and sent fund through $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$

Group of answer choices

nonce $($a random number$)$; private blockchains

wallet addresses; mixers

wallet addresses; private blockchains

nonce $($a random number$)$; mixers