If `a`, `b`, `c` are in geometric progresion and the roots of the equations `ax^(2)+2bx+c=0` are `alpha` and `beta` and those of `cx^(2)+2bx+a=0` are `gamma` and `delta` then
A. `alpha ne beta ne gamma ne delta`
B. `alpha ne beta` and `gamma ne delta`
C. `a alpha = a beta = c gamma = c delta`
D. `alpha=beta` , `gamma ne delta`