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For any three positive real numbers `a , b` and `c ,9(25 a^2+b^2)+25(c^2-3a c)=15 b(3a+c)dot` Then : `a ,b` and`c` are in`AdotPdot` (2) `a ,b` and `c` are in `GdotPdot` `b ,c` and `a` are in `GdotPdot` (4) `b , c` and `a` are in `AdotPdot`

A

b,cand a are in A.P

B

a,b and c are in A.P

C

a,b and c are in G.P

D

b,c and a are in G.P

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A
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