Select the set of letterers that when sequentially placed in the blanks of the given letter series will complete the series.
f_ hg _ fh _ gf _ hg _ fh _ g

Options

A. h, f, g, h, f, g
B. f, g, h, f, g, h
C. g, f, g, f, h, f
D. g, h, f, g, h, f

Answer

D