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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

0lth+klt2

B

0lth+klt1

C

1lth+klt2

D

1lth+klt3

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