The best title for the passage is ______.

A．disapproves of Roosevelt's "New Deal"
B．thinks the Depression could have been avoided
C．blames the Depression on the "Great Crash"
D．feels there was some similarity between Roosevelt and Hitler

A．to send sample products from door to door
B．to familiarize the customers with the products
C．to deliver the products directly to the retail stores
D．to send information about the products in quick ways