Suppose the Adoption of a New Software Reduces the Marginal

Multiple Choice

Suppose the adoption of a new software reduces the marginal cost of publishing books.For a given demand curve for books, this will be represented by:

A) an upward movement along the supply curve of books.
B) a downward movement along the supply curve of books.
C) an upward shift in the supply curve of books.
D) a downward shift in the supply curve of books.