In the generalised Hook s law equation, X=C11 x+ C12 ( Y+ Z), the constant C11 is __________

In the generalised Hook s law equation, X=C11 x+ C12 ( Y+ Z), the con

1.	In the generalised Hook s law equation, X=C11 x+ C12 ( Y+ Z), the constant C11 is __________
A.	E
B.	1/E
C.	0
D.
Answer» C. 0