Between 2019-05-13 and 2019-05-15 CARBI set ETH as base currency. As this picture is showing between 2019-05-16 and 2019-05-17 there was no activity.

https://imgur.com/a/2J9jmDG


This picture is showing that in the time interval when there was no activity, altcoins had a great dump.

https://imgur.com/a/113L9xh

Conclusion

CARBI protected ARBI from investing into altcoins and prevented the user account from having dumping bags of shitcoins. This feature is called to be smart base selection and is part of the CARBI service by default without additional cost.