Not all ads are used to promote a product or to increase a company’s profits. Which is the following statement correct?
A．All the ads are used to promote a product or to increase a company’s profits.
B．Neither of ads are used to promote a product or to increase a company’s profits.
C．Some of ads are used to promote a product or to increase a company’s profits.
D．None of ads are used to promote a product or to increase a company’s profits.
