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The equation of an ellipse whose focus i...

The equation of an ellipse whose focus is `(-1,1),` directrix is `x -y + 3=0` and eccentricity is `1/2,` is given by

A

`7x ^(2) + 2xy + 7 y ^(2) + 10x -10y+ 7=0`

B

`7x ^(2) -2xy + 7y^(2) -10x + 19y +7=0`

C

`7x ^(2) -2xy + 7y ^(2) -10x -10y -7=0`

D

`7x ^(2) -2 xy + 7y ^(2) + 10x 10y-7=0`

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The correct Answer is:
A
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