Hi my question simple, what's the best coin for a long-term investment (6months-1 year) ? BTC, ETH or LTC ? A friend told me that the best coul be LTC cause she appeared on coinbase, do you thinks it's a good investment ?

Hi, i'm a newbie and i search a good first placement. So i search what money can be good and i've find a money who look like good, it's ARK.
But i'm a newbie and i'm not sure if ARK can be a good placement. So if someone can advice me about ARK or other money who can be good for a first time that would be cool, thx