question_answer

Given \[a=1\frac{5}{7},b=\frac{1}{4},c=\frac{1}{9}\]and \[d=\left( -1\frac{1}{4} \right),\] evaluate \[a(b-c)\div d\]

A) \[\frac{-4}{21}\]                                 

B)        \[\frac{-6}{23}\]

C) \[\frac{-5}{27}\]                               

D)        \[\frac{4}{21}\]