单项选择题

Questions 196-200 refer to the following fax and invoice.
Dear Mr. Bloggs,
Our records show that you have an outstanding balance dating back to October, 2009. Your Octobe: invoice was for £ 2,820.00 and ,ye have yet to receive this payment. Please find a ccpy of the invoice enclosed.
if this amount has already been paid, please disregard this notice. Otherwise, please forward us the amount owed in full by December 1st, 2009. As our contract indicates, we begin charging 5% interest for any outstanding balances after 30 days.
Thank you in advance for your cooperation. We hope to continue doing business with you in the future.
Sincerely,
Maria McPhee
Accountant
Of Jane Smith Design Ltd.
Enclosure: Invoice # 23
JANE SMITH DESIGN Ltd
24 Durham Street-London W1F 8XH Tel: 020-7123 1234 Fax: 020-7123 1235
INVOICE
Invoice to:
BBC
For the attention of Joy Bloggs
Production Accountant
"New Horizons"
BBC Television Centre
Wood Lane, London W12 7RJ
Tel: 020 8743 6789
Invoice Date:
27/10/09
Invoice No: 23
Customer Order No: 450003456
Date Description Amount
    
  Jane Smith: Production Designer
 
14.10.09 At an agreed weekly rate of £ 1000 for the week £100000
beginning from Monday 10th October to
Friday 14th October inclusive
     
21.10.09 2 additional days at agreed rate of £ 250 per day. 17th-18th October £50000
  
21.10.09 Overseas expenses £90000
 
Net Total £240000
VAT @ 17.5% £42000
  
Total Amount Payable £282000
 
Note. I have not received the down payment for the overseas expenses.
 
Registered office address: 1 Piltdown Green, London NW1 5DF
VAT Registration No:123456789
How long does the working process last according to the invoice

A. Exactly 7 days
B. Exactly 5 days
C. Exactly 9 days
D. Exactly 8 days