【单选题】Which of the following explains why supply is more elastic as more time passes?
A.
It is difficult or impossible to increase the quantity produced in a short period of time.
B.
Consumers have more time to search for substitutes.
C.
Sellers try to take advantage of a high price in the short term.
D.
The supply curve becomes generally steeper as more time passes.
E.
There is no explanation for this phenomenon.