A sum is divided among A, B & C such that if their respective shares are increased by Rs. 120 , Rs. 150 & Rs. 90 respectively , their shares are in the ratio 9 : 8 : 6 and the total amount becomes Rs 2300. What was the ratio of their initial shares ?

Options

A. `6:5:4`
B. `78:65:51`
C. `71:63:57`
D. `7:6:5`