单项选择题

Questions 177-180 refer to the following letter.
                      Cosmo Office Solution
                      300 Light Street,
                      Baltimore, Maryland,
                      USA 21202
Mr. Thomas Lim
HKNet Co., Ltd.
6-10-3 Roppongi,
Tokyo 106-0032, Japan
Dear Mr. Thomas Lim,
On September 25, 2007, we received your order for 27 fax machines, model no. 94 and 12 photocopiers, model no. 31 and wish to thank you. As you are a new customer, we would be pleased to offer you the extra 10% discount you requested, and we hope that you’ll be satisfied with both our products and services.
The details of our business terms are enclosed. The price quoted includes insurance and transport charges up to the port of Tokyo. We require payment in U.S. dollars within 30 days of delivery of our invoice, either by wire transfer to our bank account from a U.S. bank, or by a check drawn on a U.S. bank.
As soon as we receive written confirmation of your order, we will make arrangements for shipping the consignment.
We look forward to doing regular business with you.
Sincerely yours,
Bob Penn
Bob Penn, Sales Manager
Cosmo Office Solution
What is included in the price quoted

A. Installation fee
B. Maintenance charges
C. Delivery cost to the customer
D. Marine insurance