Determine Whether the Sequence Is Geometric $$7,21,63,189 , \ldots$$ ?
A)Geometric Sequence

Multiple Choice

Determine whether the sequence is geometric.If so,find the common ratio.? $$7,21,63,189 , \ldots$$ ?

A) Geometric sequence, $r = 3$
B) Not a geometric sequence
C) Geometric sequence, $r = 8$
D) Geometric sequence, $r = 7$
E) Geometric sequence, $r = 4$