【单选题】

Questions 147-149 refer to the following letter.

RE、ROYAL PALACES PROJECTS, Hong Kong
Tae-Chang is (147) preparing a quotation on the construction of the Royal Palaces, designed by a New York-based firm.
We would appreciate your quotation on the building materials. To minimize transportation (148) of this bulky material, we would prefer obtaining it from a licensed manufacturer or supplier in the region, but are unaware of any. Please advise us, if possible, about such companies including addresses and telex numbers, so that we can make the necessary inquires.
(149) are the specifications for your reference. Your quotation should be submitted to us through your Seoul office no later than July 5.
A、To enclose
B、Enclosing
C、Enclose
D、Enclosed