Find the Unknown Sides of the Right Triangle (See Illustration) $$b = 841.3 \mathrm {~km} , \angle A = 18.94$$

Find the unknown sides of the right triangle (see illustration) . Round your answer to the appropriate number of significant digits. $$b = 841.3 \mathrm {~km} , \angle A = 18.94$$

A) a = 2,452 km, c = 288.7 km
B) a = 288.7 km, c = 889.5 km
C) a = 2,592 km, c = 2,452 km
D) a = 889.5 km, c = 2,592 km
E) a = 731.4 km, c = 1,115 km