Read the following passage carefully and answer the question based on it.
"Regarding literary disinterest in politics, it appears that, as a subject of literary presentation, it does not focus much on the obscure behavior of politics, but focuses on how it is often portrayed in literature, that is, a presentation of what politics is? A political novel is mostly not just a novel about politics but has its own politics. Therefore, it does not only tell us how things are, but clearly gives a definite thought to related ideas about how things should be and states that one should think and do exactly so that things move in the desired direction; in short, it wants to convert or enlist readers into a particular cause or ideology. This is often not literature (it is only a highly familiar phrase) but a propaganda. This is nothing but an encroachment on the literary spirit, through which we understand the world well and the sphere of our sympathies is wide, and let it not narrow our thinking and sympathy with narrow commitment, as John Keats said, 'We hate poetry that has a palpable design upon us'."

According to the passage, what is the purpose of political writing?

1. A
   To give neutral information to readers
2. B
   To convert readers into a particular ideology or cause
3. C
   To provide entertainment only
4. D
   To describe events only