Comprehension Passage
Direction: Read the following information carefully and answer the questions given below:
There are seven shops S1, S2, S3, S4, S5, S6, and S7 in a locality within a certain distance. Shop S1 is 8km to the east of shop S2, which is 9km north of shop S4. The shop S3 is 5km to the south of shop S6, which is 6km to the west of shop S7. The shop S7 is 4km to the north of shop S1. The shop S5 is 8km to the west of shop S3.
If a man starts walking from shop S4 then, find the minimum distance covered by him to reach the shop S3? (Follow the path only)
1
21km
2
12km
3
28
4
10km
5
None of these