Old profit sharing ratio=2:1 c's share=1/5 New ratio of A and B=1:2 let total profit be 1. Remained profit after c's share=1-1/5=4/5. 4/5 profit will be shared by A and B in their new ratio of 1:2 A's new share=1/3^4/5=4/15. B's new share=2/3^4/5=8/15. A's sacrificing share=old share -new share 2/3-4/15=6/15. B's sacrificing share=1/3-8/15=-3/15(gain). Hence,A will have to sacrifice while B have to gain. Therefore answer for this question will be 'C'.