Which shows a function for the sequence 16, 8, 4, 2, …?
A. f(x)=16 ∙ (2) (^x−1)
B. f(x)=16 ∙ ( 1/3 ) ^(x−1)
C. f(x)=16 ∙ ( 1/2 ) ^(x−1)
D. f(x)=16∙ ( 1/4 ) ^(x−1)