If the equation of a circle is 3x2 + 3(y − 2)2 = 12, which of the following statements is...

If the equation of a circle is 3x2 + 3(y − 2)2 = 12, which of the following statements is true?

(a) The circle has diameter 3.

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(b) The center of the circle is (2, 0).

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(c) The point (0, 0) is on the circle.

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(d) The circle has radius .

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(e) The point (1, 1) is on the circle.