Triangle ABCABCABC: point DDD on BCBCBC with ADADAD bisecting ∠A\angle A∠A. Area(ABD)=20(ABD) = 20(ABD)=20, Area(ACD)=30(ACD) = 30(ACD)=30. Ratio AB:ACAB:ACAB:AC?
2:32:32:3
3:23:23:2
4:64:64:6
1:21:21:2