Crypto is an asset that is bought/sold on the online crypto market and also a crypto asset that can be traded on a crypto exchange, not the same as fiat, which can be stored in a bank or in an account book, Crypto has an unstable price and is not fixed. Fiat has a fixed value, which can be stored in the bank without changing the value, only adding interest, crypto is not like that.

So what account option do you mean, crypto is clearly single, of course it doesn't make sense if that option is made, there are hundreds of types of crypto on the market and so do exchanges.