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The equation of the normal to the curve y = –√x + 2 at the point of its intersection with the bisector of the first quadrant is : 

(A)   2x – y + 1 = 0

(B)   4x – y + 16 = 0 

(C)  4x – y = 16 

(D)  2x – y – 1 = 0

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