Consider the two curves $C_1: y^2=4x$ and $C_2: x^2+y^2-6x+1=0$. Then,

  • A
    $C_1$ and $C_2$ touch each other only at one point.
  • B
    $C_1$ and $C_2$ touch each other exactly at two points.
  • C
    $C_1$ and $C_2$ intersect (but do not touch) at exactly two points.
  • D
    $C_1$ and $C_2$ neither intersect nor touch each other.

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