The planes \[x=cy+bz,y=az+cx,z=bx+ay\]pass through one line, if

1.	The planes \[x=cy+bz,y=az+cx,z=bx+ay\]pass through one line, if
A.	\[a+b+c=0\]
B.	\[a+b+c=1\]
C.	\[{{a}^{2}}+{{b}^{2}}+{{c}^{2}}=1\]
D.	\[{{a}^{2}}+{{b}^{2}}+{{c}^{2}}+2abc=1\]
Answer» E.

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The planes \[x=cy+bz,y=az+cx,z=bx+ay\]pass through one line, if

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