The Fisher Index Number is:

(a) GM of Laspeyres and Paasche index numbers

The Fisher Index Number isGM of Laspeyres and Paasche index numbers

My answer is also option (A)

(a) GM of Laspeyres and Paasche index numbers..................... . . . .

(A) GM of Laspeyres and Paasche index numbers

Myself not much aware in depth about the economical subject. but as i know it is having many types of calculations such as mathematical, algebraic, economical equations.

example for calculation of fisher index can be as 

Fisher

This is also called Fisher's "ideal" price index.

A

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Thanks

>>>>>>>> (a) GM of Laspeyres and Paasche index numbers