If x+y+z=a and the maximum value of \(\frac{a}{x}+\frac{a}{y}+\frac{a}{z}\) is 81λ, then the value of λ is:
\(\frac{1}{2}\)
\(1\)
\(\frac{1}{4}\)
2
The correct answer is option A) \(\frac{1}{2}\)