Read the following dialog and choose the correct answer.

Haris         : Excuse me, Sir.
Shop assistant:	Yes. What can I do for you?
Haris         : Do you have a book on gardening?
Shop assistant:	Please wait. I will check it in my computer. Yes, we have such a book entitled 50 Plants for Gardening at Home.
Haris         :	Does it have a hard cover?
Shop assistant: No, it doesn’t
Haris         :	What is the color of the cover?
Shop assistant:	It’s blue.
Haris         :	Is it thick or thin?
Shop assistant:	It’s thin enough, I think. It only consists of 80 pages.
Haris         :	How much does it cost?
Shop assistant: It costs Rp 75,000.00
Haris         :	I take it, Sir.
Shop assistant: O.K, I will get it for you. Please wait.
Haris         :	Sure.

Which statement is incorrect to ask for information about "50 Plants for Home Gardening" book?