Three identical capacitors, each of capacitance $C$, are connected in series, resulting in a net capacitance $x$. If these three capacitors are then connected in parallel, what is the ratio of the energy stored in the series configuration to the energy stored in the parallel configuration, assuming both configurations are connected to the same voltage source $V$?

• A
  $1 : 9$
• B
  $1 : 3$
• C
  $3 : 1$
• D
  $9 : 1$