Question:`x/y + y/z + z/x` এর যোগফল কত হবে? 

A `(xz + xy + yz)/(xya)` 

B `(xyz)/(xz + xy + yz)` 

C `(x^2z + xy^2 + yz^2)/(xyz)` 

D `(xyz)/(x^2z + xy^2 + yz^2)` 

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