which sequences are geometric? Select 3 options.
A) -2.7, -9, -30, -100,...
B)-1, 2.5, -6.25, 15.625,...
C)9.1, 9.2, 9.3, 9.4,...
D)8, 0.8, 0.08, 0.008,...
E)4, -4, -12, -20,...​