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Let f : R rarr R be such that f is is in...

Let f : R `rarr` R be such that f is is injective and f(x) f(y) = f(x + y) for all x , y `in` R . If f(x), f(y), f(z) are in G.P. then x , y , z are in

A

A.P always

B

G.P always

C

A.P depending on the values of x,y,z

D

G.P depending on the values of x,y,z

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The correct Answer is:
A
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