There are two circles whose equation are...

There are two circles whose equation are `x^2+y^2=9` and `x^2+y^2-8x-6y+n^2=0,n in Zdot` If the two circles have exactly two common tangents, then the number of possible values of `n` is

A

2

B

7

C

8

D

9

Verified by Experts

The correct Answer is:

Hence, number of possible values of n is 9.

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