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Consider the circle C:x^2+y^2-6y+4=0 an...

Consider the circle `C:x^2+y^2-6y+4=0` and the parabola `P:y^2=x` Then: A) the number of common tangents to C and P is 3 B) the number of common tangents to C and P is 2 C) `x-2y +1=0` is one of the common tangents D) `x+2y+1=0` is also one of the common tangents

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