A.
Filial piety is the root of Ren
B.
To hold love and respect for parents and brothers is the practice of Ren.
C.
To have love for parents or respect for elder brothers are essence of Ren
D.
Surely proper behaviour towards parents and brothers is the trunk of goodness To have love for parents or respect for elder brothers are essence of Ren; Surely proper behaviour towards parents and brothers is the trunk of goodness】