The Magic Stone cantrip (PotA p.238/EEPC p.20) says:
You touch one to three pebbles and imbue them with magic. You or someone else can make a ranged spell attack with one of the pebbles by throwing it or hurling it with a sling. If thrown, it has a range of 60 feet.
If sling is used to launch one of the pebbles, is the range 30/120, or just 120?