What is the key step in Taguchi‚Äö√Ñ√∂‚àö√ë‚àö¬•s approach?$

What is the key step in Taguchi‚Äö√Ñ√∂‚àö√ë‚àö¬

1.	What is the key step in Taguchi‚Äö√Ñ√∂‚àö√ë‚àö¬•s approach?$
A.	Tolerance design
B.	System design
C.	Parameter design
D.	Process design
Answer» D. Process design