Which sequences have a common ratio of 1/4

Choose exactly two answers that are correct

A-8, 2, -1/2, 1/8, -1/32

B3, 12, 48, 192, 768

C-1/5, -1/20, -1/80, -1/320, -1/1280

D320, 80, 20, 5, 1.25