If the points \[(a,\,0),\ (0,\,b)\]and (1, 1) are collinear, then �

1.	If the points \[(a,\,0),\ (0,\,b)\]and (1, 1) are collinear, then
A.	\[\frac{1}{{{a}^{2}}}+\frac{1}{{{b}^{2}}}=1\]
B.	\[\frac{1}{{{a}^{2}}}-\frac{1}{{{b}^{2}}}=1\]
C.	\[\frac{1}{a}+\frac{1}{b}=1\]
D.	\[\frac{1}{a}-\frac{1}{b}=1\]
Answer» D. \[\frac{1}{a}-\frac{1}{b}=1\]

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If the points \[(a,\,0),\ (0,\,b)\]and (1, 1) are collinear, then

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