Evaluate the Sum $$\sum _ { k = 1 } ^ { 4 } ( - 1 ) ^ { k \cdot - 3 k }$$

Multiple Choice

Evaluate the sum. Round to two decimal places, if necessary.
- $$\sum _ { k = 1 } ^ { 4 } ( - 1 ) ^ { k \cdot - 3 k }$$

A) -6
B) -30
C) 81
D) 30