A formula for finding the terms of a sequence is shown below. LaTeX: a_1=100a 1 = 100

LaTeX: a_n=\frac{1}{2}a_n-1a n = 1 2 a n − 1
Which formula represents the same sequence?

A. LaTeX: a_n=100\left(\frac{1}{2}\right)^na n = 100 ( 1 2 ) n

B. LaTeX: a_n=100\left(\frac{1}{2}\right)^{n- 1}a n = 100 ( 1 2 ) n − 1

C. LaTeX: a_n=200\left(\frac{1}{2}\right)^{n+ 1}a n = 200 ( 1 2 ) n + 1

D. LaTeX: a_n=200\left(\frac{1}{2}\right)^{n- 1}a n = 200 ( 1 2 ) n − 1

Group of answer choices