A man invested Rs. 240000 in three parts. On one part he gains 10% and in the second part he invested 16000 more than the first part and lost 5%. On the third he gains 20%. On the whole he gets 9% gain. The ratio of invested parts are:

• A. 4 : 5 : 6
• B. 3 : 4 : 5
• C. 2 : 3 : 4
• D. 1 : 2 : 3