The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options.

P: E-waste is valuable as a source of secondary raw material.

Q: But it is also toxic if disposed of improperly.

R: When we talk about recycling household and work place things, we tend to ignore or are less aware of how to deal with the electrical and electronic waste (sometimes called e-waste).

S: Due to rapid technology change, obsolescent items have created a fast growing mass of electronic waste around the globe.