Tính \(\frac{9}{{14}}.\frac{{ - 5}}{8}.\frac{{14}}...

Câu hỏi: Tính \(\frac{9}{{14}}.\frac{{ - 5}}{8}.\frac{{14}}{9}\)

A. \(\frac{{ - 15}}{28}\)

B. \(\frac{{ - 9}}{28}\)

C. \(\frac{{ - 5}}{8}\)

D. \(\frac{{ - 7}}{8}\)