The minimum thickness of walls built in cement mortar (1 : 6) for a single storey building, is

The minimum thickness of walls built in cement mortar (1 : 6) for a si

1.	The minimum thickness of walls built in cement mortar (1 : 6) for a single storey building, is
A.	10 cm
B.	15 cm
C.	20 cm
D.	25 cm
Answer» D. 25 cm