Match List I (Steel) with List II (Application) and select the correct answer using the code given below the lists:
List I
A. Mild steel
B. Tool steel
C. High carbon steel
D. Medium carbon steel
List II
1. Ball bearing
2. Cold chisels
3. Shaft and axles
4. Rolled steel sections
Codes:
A B C D
(a) 2 1 4 3
(b) 4 3 2 1
(c) 2 3 4 1
(d) 4 1 2 3