To find n-therm of a geometric sequence, we are going to use the formula 
where:
is the term we are looking for
is the first term
is the ratio
is the position of the number in the sequence
From the question we now that
, 
, and 
. Lets replace those values into our formula to get:
We can conclude that in our geometric sequence; therefore, the answer is A.
where:
From the question we now that
We can conclude that in our geometric sequence