Two postmen, C and D, start walking from a post office. C walk 2 km north, then turns to his right and walks 5 km. Meanwhile D walks 5 km East, turns right and walks 6 km. Where is D with respect C?

• A. D is 8 km south of C
• B. D is 4 km south of C
• C. D is 8 km North of C
• D. D is 4 km North of C