(20pts) Monica measures the number of bacteria that are living on her petri dish. Each day, she measures the amount of change in the number of bacteria. These amounts create a geometric sequence. Use the data in the table to determine the sum of the amounts of change in the bacteria after the seventh day.

Day; Amount of Change in Bacteria
1; 2
2; −8
3; 32
4; −128

Answers:
A. −6553.2
B. −10.8
C. 6554
D. 11.6