In reinforcing elements, galvanised steel strips of _________ width and ____ thickness are used commonly.

In reinforcing elements, galvanised steel strips of _________ width an

1.	In reinforcing elements, galvanised steel strips of _________ width and ____ thickness are used commonly.
A.	50 to 100 mm, 9mm
B.	50 to 70 mm, 20mm
C.	110 to 180 mm, 30mm
D.	200 to 310 mm, 40mm
Answer» B. 50 to 70 mm, 20mm