if a,b ,c >0 and (a+b+c)(ab+ab+ca)=3z value of z is

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✪ Choose the correct option.

if a,b ,c >0 and (a+b+c)(ab+ab+ca)=3z value of z is

A. z=abc
B. z=2abc
C. z=3abc
D. z=4abc

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