Add or Subtract the Radical Expressions as Indicated, If Possible $$\sqrt [ 5 ] { 15 } + 8 \sqrt [ 5 ] { 15 } - \sqrt [ 5 ] { 7 }$$

Multiple Choice

Add or subtract the radical expressions as indicated, if possible. $$\sqrt [ 5 ] { 15 } + 8 \sqrt [ 5 ] { 15 } - \sqrt [ 5 ] { 7 }$$

A) $8 \sqrt [ 5 ] { 23 }$
B) $9 \sqrt [ 5 ] { 15 } - \sqrt [ 5 ] { 7 }$
C) $8 \sqrt [ 5 ] { 8 }$
D) Cannot be simplified further