If $\large(a^2)^{\normalsize{1/3}} \large (a^5)^{\normalsize{1/3}}=a^n$ then what is the value of $n$ ?

Question

$\begin{array}{1 1} (a)\;\frac{7}{3} \\ (b)\;\frac{1}{3} \\(c)\;\frac{1}{4} \\(d)\;\frac{7}{3} \end{array}$