Solution Provider

What is ${8} \dfrac{2}{5} - {7}\dfrac{1}{2}$?
A. $\dfrac{9}{10}$
B. $ {1} \dfrac{9}{10}$
C. $ {2} \dfrac{9}{10}$
D. $ {4} \dfrac{9}{10}$
E. $ {3} \dfrac{9}{10}$