If line P Q , where equation is y=2x+k ,...

If line `P Q` , where equation is `y=2x+k` , is a normal to the parabola whose vertex is `(-2,3)` and the axis parallel to the x-axis with latus rectum equal to 2, then the value of `k` is `(58)/8` (b) `(50)/8` (c) `1` (d) `-1`

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