If a^2+2bx+c=0 and a1x^2+2b1x+c1=0 have ...

If `a^2+2bx+c=0 and a_1x^2+2b_1x+c_1=0` have a common root and `a/a_1,b/b_1,c/c_1` are in AP then `a_1,b_1,c_1` are in (A) A.P. (B) G.P. (C) H.P. (D) none of these

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