Which choice is the explicit formula for the following

Last updated: 8/10/2022

Which choice is the explicit formula for the following geometric sequence? 0.5, -0.1, 0.02, -0.004, 0.0008, ... A. an= -0.5(0.2)^(n-1) B. an = 0.5(0.2)^n C. an= -0.5(0.3)^(n-1) D. an=-0.5(-0.2)^(n-1) E. an = 0.5(-0.2)^(n-1)