If the pair of lines `ax^2+2(a+b)xy+by^2=0` lie along diameters of a circle and divide the circle into four sectors such that the area of one of the sectors is thrice the area of another sector then
A
`3a^2+2ab+3b^2=0`
B
`3a^2+10ab+3b^2=0`
C
`3a^2-2ab+3b^2=0`
D
`3a^2-10ab+3b^2=0`
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The correct Answer is:
A
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