Question: What are the methods of collection of solid wastes?

I. Refuse storage which may sometimes require delivery of refuse by the householder over a considerable distance II. Door-to-door collection, where the collector enters the premises and collects the refuse and the householder is not involved in the collection process. III. Dumping in river or stream

Options:

A) I & II

B) Only II

C) Only I

D) All the above