Explanation:
(B) : Given,
equation of lines is \(\mathrm{kx}^{2}+\mathrm{xy}-\mathrm{y}^{2}=0\)
\(\therefore(-1) \mathrm{m}^{2}+\mathrm{m}+\mathrm{k}=0\), is an auxiliary equation.
Since one line is angle bisector of the coordinate axes, we write \(\mathrm{m}= \pm 1\).
When, \(\mathrm{m}=1\), from auxiliary equation, we get \(\mathrm{k}=0\).
When, \(\mathrm{m}=-1\), from auxiliary equation, we get \(\mathrm{k}=2\).