question_answer

If three unequal numbers p, q, r are in H.P. and their squares are in A.P., then the ratio p : q : r is

A)  \[1-\sqrt{3}:2:1+\sqrt{3}\]         

B)  \[1:\sqrt{2}:-\,\sqrt{3}\]

C)  \[1:-\,\sqrt{2}:\sqrt{3}\]             

D)  \[1\mp \sqrt{3}:-\,2:1\pm \sqrt{3}\]

E)  None of these