Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.
A. The so-called harmless activities of a small number of people are increasingly becoming a serious problem for the internet.
B. You would have seen an increasing amount of 'junk mail' showing up in your email box.
C. It is basically electronic junk mail or junk newsgroup postings.
D. Spam is the flooding of the internet with many copies of the same message, in an attempt to force the message on people who would not otherwise choose to receive it.