A and b started business with 20,000 and 35,000 respectively.they agreed to share the profit in the ratio of their capital.C joins the parteneship with the condition that A,B,C share profit equally and pays 2,20,000 pays premium for this, to be shared between A and B . This is to be divided in A and B in ratio of.....plz explain too

1) 10:1
2) 1:10
3) 9:10
4) 10:9