Solve the Problem $6400 \mathrm {~km}$ City E $47 ^ { \circ } \mathrm { N }$

Multiple Choice

Solve the problem.
-Find the distance in kilometers between the cities whose latitudes are given. Assume that the cities are on a north-south line and that the radius of the earth is $6400 \mathrm {~km}$ . City E, $47 ^ { \circ } \mathrm { N }$ and city F, $80 ^ { \circ } \mathrm { S }$

A) $3678 \mathrm {~km}$
B) $14,194 \mathrm {~km}$
C) $3686 \mathrm {~km}$
D) $14,186 \mathrm {~km}$