A boat can row upstream at 12 km/h and downstream at 20 km/h. Find the speed of boat in still water and the speed of the stream.

32 km/h, 8 km/h 14 km/h, 4 km/h 10 km/h, 6 km/h 16 km/h, 4 km/h

16 km/h, 4 km/h

The correct answer is Option (4) → 16 km/h, 4 km/h