Which of the following is the typical carbon concentration range for cast irons?

A. 1.0 wt% - 1.5wt% C
B. 1.0 wt% - 2.0wt% C
C. 2.0 wt% - 3.0wt% C
D. 2.0 wt% - 3.5wt% C
E. 3.0 wt% - 4.0wt% C
F. 3.0 wt% - 4.5wt% C