Dear Sir/MadamI am writing to you (29) a customer of ours who would like to (30) some space in your hotel foyer (31) display their products.The company produces balloons (32) carry advertising slogans, (33) the display would probably be interesting for your business customers.The display (34) would be a platform (35) chairs and tables, and contain samples of the company’s products. The stand would be 4mx8m and the display would last (36) a week (37) best effect the stand would be located in a (38) comer of the foyer.If you are interested I suggest we meet (39) to discuss details.I look forward (40) hearing from you.Yours faithfully 40（）

A. what
B. which
C. where