which of the following statements does the professor support?
A.
The price of a pair of 1986 Air Jordans in Japan is unbelievably high because they are very useful and needed by mass-consumers.
B.
People deposited old baseball cards on the attics and storage closets in order to preserve their values.
C.
Not all antique hunters can distinguish whether it is priceless or worthless.
D.
The professor encourages people to store things they love in order to increase in value.