Find the Exact Value of the Expression $\log _{5} 20+\log _{5} 35-6 \log _{5} 2$

Find the exact value of the expression. $\log _{5} 20+\log _{5} 35-6 \log _{5} 2$

A) 4
B) 3
C) 1
D) 5
E) 2