The two sentences in the following pairs are similar in meaning. Choose the one that you think is better and explain your choice with reference to the 6C principles. 1. A. The computer is not working properly. B. The computer freezes when I hit the shift key. 2. A. We cannot do anything about your problem. B. Unfortunately, we are unable to help you on this occasion. 3. A. Please send your signed invoice, so you can receive your payment promptly. B. We must receive your signed invoice before we can process your payment. 4. A. Arrangements have been made for a repeat order to be shipped to you immediately. B. I have arranged for a repeat order to be sent to you today. 5. A. The company has 2, 200 employees of which 1, 500 are salaried and 700 are at an hourly rate. B. The company has on its payroll a total of 2, 200 employees, of which 1, 500 are in the salaried group and 700 in the hourly rate group. 6. A. We are extremely sorry to inform you that at the present moment, we are running out of stock for the item about which you inquired. Would you please kindly consider other items? B. Unfortunately item No. 126 about which you inquired is out of stock now. We recommend item No. 226 and item No. 229, which are our latest models and can serve the same function as item No. 126.