A6. On the map, the distance between two towns is $8 \mathrm{~cm}$. In what scale is the map drawn if the distance between these towns is $4 \mathrm{~km}$?
(A) $1: 2$
(B) $1: 5$
(C) $1: 4000$
(D) $1: 5000$
(E) $1: 50000$
A6. The ratio $8 \mathrm{~cm}: 4 \mathrm{~km}=8 \mathrm{~cm}: 400000 \mathrm{~cm}=1: 50000$.