GCE Geography 1990 Question 26

A rain gauge is kept in an open place in the observatory because

1. A.it is much more easily accessible to the observer
2. B.rain drops get into the funnel without any obstruction
3. C.rain falls more heavily in the open space
4. D.rain drops are deflected by the wind in an open place
5. E.the funnel is easily filled with rain water