これが正解

B:EOS,ETH
B-:ADA,NEO,STEEM
C+:ARK,BTC,BTS,GBYTE,DASH,DCR,IOC,LTC,XEM
C:AEON,XAS,BLK,BLOCK,BURST,BCN,XCP,DOGE,ETC,KMD,LSK,XMR,NAV,XWC,NEBL,NXS,NXT,PPC,PIVX,QTUM,XRB,XRP,SHIFT,SMART,XLM,START,SYS,XVG,VTC,WAVES,XBY,ZEC,XZC
C-:BCH,CLOAK,GB,XDN,ETN,FTC,NMC,RDD,SKY,UBQ,VIA,ZEN
D+:AUR,BTG,EMC2,GAME,NLG,MEC,ETP,PURA
D:EXP,GUP,NVC,POT,QRK,RISE,SLS