Use the Properties of Exponents to Simplify the Expression $\left( - 8 p ^ { 3 / 5 } - 9 p ^ { 4 / 5 } \right) \left( - 8 p ^ { 3 / 5 } - 9 p ^ { 4 / 5 } \right)$

Multiple Choice

Use the properties of exponents to simplify the expression. Write with positive exponents.
- $\left( - 8 p ^ { 3 / 5 } - 9 p ^ { 4 / 5 } \right) \left( - 8 p ^ { 3 / 5 } - 9 p ^ { 4 / 5 } \right)$

A) $64 \mathrm { p } ^ { 9 / 25 } + 7 \mathrm { p }$
B) $64 \mathrm { p } ^ { 6 / 5 } + 72 \mathrm { p } ^ { 7 / 5 } + 81 \mathrm { p } ^ { 8 / 5 }$
C) $- 16 p ^ { 6 / 5 } + 72 p ^ { - 18 / 5 } - 18 p ^ { 8 / 5 }$
D) $64 p ^ { 6 / 5 } + 144 p ^ { 7 / 5 } + 81 p ^ { 8 / 5 }$