The slope of the straigt line joining th...

The slope of the straigt line joining the centre of the circle `x ^(2) + y ^(2) - 8x + 2y =0 and ` rthe vertex of the parabola `y = x ^(2) - 4x + 10` is

A

`(-5)/(2)`

B

`(-7)/(2)`

C

`(-3)/(2)`

D

`(5)/(2)`

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The correct Answer is:

B

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