Answer
$B$
Work Step by Step
The nth term can be calculated as: $a_n= a_1 r^{n-1}$ ...(1)
Here, r = common ratio and $a_1$ = Initial term
In equation (1) there is a common ratio of $r=4$ between the successive terms.
Initial term $a_1=5$
Hence, our correct option is $B$.
