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If the variable line `y=kx+2h` is tangent to an ellipse `2x^2+3y^2=6`, then locus of P(h, k) is a conic C whose eccentricity equals
A. |
`sqrt5/2` |
B. |
`sqrt7/3` |
C. |
`sqrt7/2` |
D. |
`sqrt(7/3)` |
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