Convert the Expression to Radical Notation $$a ^ { 5 / 7 } m ^ { 3 / 7 }$$

Multiple Choice

Convert the expression to radical notation. $$a ^ { 5 / 7 } m ^ { 3 / 7 }$$

A) $\sqrt [ 7 ] { a m }$
B) $\sqrt [ 7 ] { a ^ { 5 } m ^ { 3 } }$
C) $\sqrt { a m }$
D) $\sqrt { a ^ { 5 } m ^ { 3 } }$