C-11-Q104mediumsingle_mcqIf a:b=3:4a:b = 3:4a:b=3:4 and b:c=6:7b:c = 6:7b:c=6:7, then a:b:c=a:b:c =a:b:c=a9:12:149:12:149:12:14b3:4:73:4:73:4:7c