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If the points with the coordinates (a, m...

If the points with the coordinates (a, ma), `{b,(m+1)b},` {c,(m+2)c}` are collinear, then which one of the following is correct ?

A

For all value of 'm' a,b,c are in AP./

B

For all value of 'm' a,b,c are in G.P /

C

For all value of 'm' a,b,c are in H.P/

D

Only m = 1,a,b,c are in A.P/

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