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If the focus of the parabola (y - k)^2 =...

If the focus of the parabola `(y - k)^2 = 4(x - h)` always lies between the lines `x + y = 1 and x + y = 3,` then

A

`0 lt h + k lt 2`

B

`0 lt h + k lt 1`

C

`1 lt h + k lt 2`

D

`1 lt h + k lt 3`

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The correct Answer is:
A
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