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L1 is a tangent drawn to the curve x24y2=16 at A(5,32). L2 is another tangent parallel to L1 which meets the curve at B. L3 and L4 are normals to the curve at A and B respectively. Lines L1,L2,L3,L4 form a rectangle. Then

A
Equation of tangent at B is 6y=5x16.
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B
Equation of normal at B is 12x+10y+75=0.
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C
Radius of largest circle inscribed in the rectangle is 3261
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D
Radius of the circle circumscribing the rectangle is 1092
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