Factor, Using the Given Factor $15 s ^ { 3 / 7 } - 15 s ^ { - 5 / 7 } ; \quad s ^ { - 5 / 7 }$

Multiple Choice

Factor, using the given factor. Assume all variables represent positive real numbers.
- $15 s ^ { 3 / 7 } - 15 s ^ { - 5 / 7 } ; \quad s ^ { - 5 / 7 }$

A) $\mathrm { s } ^ { 1 / 3 } \left( 15 - 15 \mathrm {~s} ^ { 8 / 15 } \right)$
B) $s ^ { 3 / 7 } \left( 15 s ^ { 8 / 7 } - 158 / 15 \right)$
C) $s ^ { - 5 / 7 } \left( 15 s ^ { 8 / 7 } - 15 s \right)$
D) $s ^ { - 5 / 7 } \left( 15 s ^ { 8 / 7 } - 15 \right)$