Latex Coder 2

What is $\displaystyle {6}\frac{2}{3} - {1}\frac{1}{3}$?
A. $ {5}\dfrac{1}{3}$
B. $ {6}\dfrac{1}{3}$
C. $ \dfrac{1}{3}$
D. ${5}\dfrac{2}{3}$
E. $ {6}\dfrac{2}{3}$