A Pair of Parallel Plates,forming a Capacitor,are Connected to a Battery.While

Multiple Choice

A pair of parallel plates,forming a capacitor,are connected to a battery.While the capacitor is still connected to the battery maintaining a constant voltage,the plates are pulled apart to triple their original distance.What is the ratio of the final energy stored to the original energy stored?

A) 3
B) 1
C) 1/3
D) 1/9
E) ​9