Simply
[tex] \frac{ \sqrt[3]{6} }{ \sqrt[4]{6} } [/tex]
A
[tex] {6}^{ \frac{1}{12} } [/tex]
B
[tex] {6}^{ \frac{1}{4} } [/tex]
C
[tex] {6}^{ \frac{4}{3} } [/tex]
D
[tex] {6}^{ \frac{7}{12} } [/tex]