Alloying elements for tool steel and its improved mechanical property

Question

Match List I (Alloying elements for tool steel) with List II (Improved mechanical property) and

select the correct answer:

             List I                List II

A.  Carbon                1.  Hardness

B.  Manganese         2.  Hot Hardness

C.  Chromium           3.  Lower Critical Temp.

D.  Vanadium           4. Toughness

         A     B     C     D  

(a)    1      3      4     2

(b)    2      4      3     1

(c)    1      4      3     2

(d)    2      3      4     1