Tatsouka 2009

What is the value of $3$ $\dfrac{5}{7}$ $-$ $3$ $\dfrac{1}{5}$?
A. $\dfrac{18}{35}$
B. $\dfrac{1}{2}$
C. $\dfrac{3}{2}$
D. $1$
E. $\dfrac{67}{35}$