Which sequence has a common difference of −3-3−3?
3,6,9,123, 6, 9, 123,6,9,12
10,13,16,1910, 13, 16, 1910,13,16,19
10,7,4,110, 7, 4, 110,7,4,1
1,4,7,101, 4, 7, 101,4,7,10