4. Which of the following is a geometric sequence?

A. 19, 15, 21, 27,...

B. 4,9,16,25,...

C. 3,-9, 27,-81,...

D. 30,15,0, -15,...
I’ll give brainiest :)


Answer :

Answer:

1, 3, 9, 27, 81, . . .

Step-by-step explanation:

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