Hello if you could only pick amongst Bitcoin, Ethereum, Ripple, Bitcoin Cash, and Litecoin to BUY and HODL for ALL of 2018 what would you pick and in what ratios?

If you could only choose amongst the top 5 to buy and hold all year. Which strategy would have best gains and less risk?

For instance you could do 40% BTC, 30% Eth and 30% LTC.....  OR 50% BTC, 50% BCH..... or  33% BTC, 33% Eth, 33% Ripple......  or 100% BTC.