问题：
[单选题]Look at the following after-sales letter. Arrange them in a logical order.
a. As far as I know, lots of European retailers begin to sell vehicles with rechargeable lithium batteries, but we need detailed information.
b. And you can be sure of our immediate attention to your order, which we are looking forward to receiving.
c. We would appreciate your help if you could take prompt action on our request.
d. I would like to bring to your kind notice that our recently launched engine motor is capturing the market at a very fast pace. For your information, I'm sending you a file of our new product specification in the attachment.
e. In the meanwhile, we would be really grateful to you if you could provide us the literature and requisite details of your market.
Adeacb
Bdaceb
Cacebd
Dabecd
答案解析：