Multiply the Expression Using the Product Rule $$x ^ { 7 } \cdot x ^ { 7 } \cdot x ^ { 8 }$$

Multiple Choice

Multiply the expression using the product rule.
- $$x ^ { 7 } \cdot x ^ { 7 } \cdot x ^ { 8 }$$

A) $x ^ { 57 }$
B) $x ^ { 15 }$
C) $x ^ { 14 }$
D) $x ^ { 22 }$