Giá trị a thỏa mãn: a : ({left( {frac{1}{3}} ight)^2} = {left( {frac{1}{3}} ight)^3}) 

A. \(\frac{1}{3}\)

B. \({\left( {\frac{1}{3}} \right)^5}\)

C. \({\left( {\frac{1}{3}} \right)^6}\)

D. \(\frac{1}{{18}}\)