From: Paul Richardson＜[e-mail]＞ To: Samuel Johnson＜[e-mail]＞ Date: Feb. 2 Subject: Work update Dear Mr. Johnson, We, at Business World Monthly, thank you very much for your review. It is such a pleasure to have people like you review articles quickly and precisely. We thought this would have taken a few days, but after just one day we already got your review. Your work was excellent as usual. Our editors have noted your critique is always comprehensive yet concise in delivering the message, providing considerable amounts of insights to maintain a position as desired originally by the article writer. Your payment is being processed and will be sent to you within 3 business days. We would like to offer you a next assignment which is a review of Future Markets in China by Michael Wu. We are planning to add a few pages for the reviewers columns, so the review may now be up to 1,000 words. However, since we need to more time to revise submissions, we will be instituting strict deadlines. Please, accept this work only if you are able to meet the deadline. If you agree to write this review, a copy of the book and the recently updated copy of the guidelines for reviewers will be sent to you immediately. Please notify us of your availability within 5 business days. Thank you. Yours Sincerely, Paul From: Samuel Johnson＜[e-mail]＞ To: Paul Richardson＜[e-mail]＞ Subject: Re: Work update Date: Feb. 7 Dear Mr. Richardson, Thank you for your kind comments. I am happy to be working with your company as well. Yes, Id like to officially accept your offer. Besides, I personally know Mr. Wu very well. We even attended the book fair in Seoul last year. As far as I know, he is a very knowledgeable scholar in the field of International Marketing. I am excited, and I cant wait to read his book. In addition, thank you for sending me the payment. I received it on February 4th as you promised. Thank you. Sincerely, Samuel Johnson
What is the purpose of the first e-mail？

A. To ask Mr. Johnson to attend a book fair
B. To explain a proposed project
C. To notify Mr. Johnson of a changed deadline
D. To confirm receipt of a payment