Select the correct answer.
Read this post on a social networking site.

Play tennis like a pro with these shoes. Made of sturdy, synthetic material, these shoes will support your feet as you spring to slam that smash shot. The soles provide a perfect grip, while the insoles keep your feet comfortable. You’ll nail that ace in these shoes. Get your pair today!

What is the purpose of this post?

A.
to provide tips on playing tennis
B.
to give advice on choosing tennis shoes
C.
to advertise a new pair of tennis shoes
D.
to give information on making tennis shoes
E.
to educate people about the benefit of tennis shoes