Chọn dấu thích hợp để điền vào chỗ chấm: 

$\dfrac{{1111}}{{1112}}\,\,\, \cdot  \cdot  \cdot \,\,\dfrac{{2017}}{{2019}}$

A.  $1$

B. $\dfrac{1}{7}$                               

C. $\dfrac{7}{4}$                              

D. $\dfrac{{77}}{4}$

A. $24:2$ 

B. $24:2 \times 3$

C. $24:3$

D. $24:3 \times 2$

A. $\dfrac{5}{6}\,\,;\,\,\,\dfrac{2}{3}\,\,;\,\,\,\dfrac{8}{7}\,\,;\,\,\,\dfrac{1}{2}$

B. $\,\,\dfrac{8}{7}\,\,;\,\,\,\dfrac{5}{6}\,\,;\,\,\,\dfrac{2}{3}\,\,;\,\,\,\dfrac{1}{2}$   

C. $\,\,\dfrac{8}{7}\,\,;\,\,\,\dfrac{2}{3}\,\,;\,\,\,\dfrac{5}{6}\,\,;\,\,\,\dfrac{1}{2}$

D. $\,\,\dfrac{8}{7}\,\,;\,\,\,\dfrac{5}{6}\,\,;\,\,\,\dfrac{1}{2}\,\,;\,\,\,\dfrac{2}{3}\,\,$