Where do we give the longitudinal dimension of the welding portion in the conventional representation of the welded joints?

Where do we give the longitudinal dimension of the welding portion in

1.	Where do we give the longitudinal dimension of the welding portion in the conventional representation of the welded joints?
A.	Top of the symbol
B.	Bottom of the reference line
C.	Left-hand side of the symbol
D.	Right-hand side of the symbol
Answer» E.