请问这篇英语阅读理解怎么做？三、Reading（4道小题，共40分） Advertisement can be thou

请问这篇英语阅读理解怎么做？
三、Reading（4道小题，共40分）
Advertisement can be thought of “as the means of making known
in order to buy or sell goods or services”. Advertisement aims to increase
people’s awareness and arouse
interest. It tries to inform and to persuade.
The media are all used to spread the message. The press offers a fairly cheap
method, and magazines are used to reach special
sections of the market.
The cinema and commercial radio are useful for local market. Television,
although more expensive, can be very effective. Public notices are fairly
cheap and more permanent in their power of attraction. Other ways of
increasing consumer interest are through exhibitions and trade fairs as well as
direct mail advertisement.
There can be no doubt that the growth in
advertisement is one of the most striking features of the western world in this
century. Many businesses such as those handling
frozen foods, liquor,
tobacco and medicines have been built up largely by advertisement.
5. From the last sentence of this passage we conclude that _____.
A) businesses usually do not pay much for advertisement
B) businessmen know well that advertisement could bring them more profits
C) advertisement could hardly convince people of the value of the goods
D) advertisement usually cost businesses large amounts of money