. The lines \[{{a}^{2}}{{x}^{2}}+bc{{y}^{2}}=a(b+c)xy\] will be coincident, if

. The lines \[{{a}^{2}}{{x}^{2}}+bc{{y}^{2}}=a(b+c)xy\] will be coinci

1.	. The lines \[{{a}^{2}}{{x}^{2}}+bc{{y}^{2}}=a(b+c)xy\] will be coincident, if
A.	\[a=0\] or \[b=c\]
B.	\[a=b\] or \[a=c\]
C.	\[c=0\] or \[a=b\]
D.	\[a=b+c\]
Answer» B. \[a=b\] or \[a=c\]

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