Find the Sum of the Sequence $$\sum _ { k = 3 } ^ { 5 } \left( k ^ { 2 } - 9 \right)$$

Multiple Choice

Find the sum of the sequence.
- $$\sum _ { k = 3 } ^ { 5 } \left( k ^ { 2 } - 9 \right)$$

A) $- 15$
B) 23
C) 10
D) $- 3$