What is the value of lankford coefficient (r) for good deep drawable m

1.	What is the value of lankford coefficient (r) for good deep drawable material?
A.	‚Äö√Ñ√∂‚àö¬¢¬¨√ü 1
B.	‚Äö√Ñ√∂‚àö¬¢¬¨√ü 2
C.	‚Äö√Ñ√∂‚àö¬¢¬¨√ü 3
D.	‚Äö√Ñ√∂‚àö¬¢¬¨√ü 4
Answer» C. ‚Äö√Ñ√∂‚àö¬¢¬¨√ü 3

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