'A' offers to sell his house to 'B' by letter on 5th July for Rs.10 lakhs. This letter is received by 'B' on 10th July 2005. 'B' sends the acceptance letter on 15th July, which 'A' receives on 20th July. In this problem the communication of proposal is completed:

• A. 5 जुलाई, 2005 को
• B. 10 जुलाई, 2005 को
• C. 15 जुलाई, 2005 को
• D. 20 जुलाई, 2005 को