______ paint is easier to apply, covers better and lasts longer.

A．It’s because there are many developing nations.
B．It’s because people use too many man-made materials.
C．It’s because we have more and more industry.
D．It’s because we are building more vehicles.

A．At a newspaper.
B．At an advertising agency.
C．At a furniture store.
D．At a real estate office.