The set of all real values of lambda for...

The set of all real values of `lambda` for which exactly two common tangents can be drawn to the circles `x^2 + y^2-4x-4y + 6=0` and `x^2 + y^2-10x-10y+ lambda = 0` is the interval

A

(12,32)

B

(18,42)

C

(12,24)

D

(18,48)

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The correct Answer is:

B

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