<prompt> What shall be the Gustafsons ranking of structural changes in age determination , if attrition is reaching the dentin,Periodontosis along first 13rd of root, Cementum apposition is a heavy layer ,more cementum and dentin affected, Transparency over apical 13rd of rootA2,P2,C3,R3,T3A2,P2,C3,R3,T2A1,P1,C3,R2,T3A3,P2,C1,R2,T0  <response>: Gustafsons ranking of structural changes in age determination A Attrition A-0 No Attrition A-1 Attrition lying within enamel A-2 Attrition reaching the dentin A-3 Attrition reaching the pulp P Periodontosis P-0 No Periodontosis P-1 Periodontosis just begun P-2 Periodontosis along first 13rd of root P-3 Periodontosis along 23rd of root C Cementum apposition C-0 Normal C-1 A layer little greater than normal C-2 A great layer C-3 A heavy layer R Root resorption R-0 No visible restoration R-1 Resorption only on small isolated spots R-2 Greater loss of substance R-3 More cementum and dentin affected T Root transparency T-0 Transparency not present T-1 Transparency just noticeable T-2 Transparency over apical 13rd of root T-3 Transparency over apical 23rd of root 