Latex Coder 2

What is $\displaystyle {7}\frac{2}{3} - {1}\frac{1}{3}$?
A. $ {6}\dfrac{1}{3}$
B. $ {7}\dfrac{1}{3}$
C. $ \dfrac{1}{3}$
D. ${6}\dfrac{2}{3}$
E. $ {7}\dfrac{2}{3}$