We can infer from the passage that______.A.postcards will disappear in a few years because
We can infer from the passage that______.
A.postcards will disappear in a few years because of other devices of communication
B.people's happiness in sending and receiving postcards can only last a moment
C.postcard collecting might be one of the reasons why some people still like the postcards
D.without postcards, people will have less communication with others