A battery is used to charge a parallel plate capacitor after which it is disconnected leaving the capacitor charged and isolated. The plates are then moved to twice their initial separation. Which of the following statements is/are true?

I. This process will double the energy stored in the capacitor.

II. This process will double the capacitance of the capacitor.

III. This process will double the electric field between the plates.

umm its a tricky question

i had the same answer and put c. deflect randomly in multiple directions.   i looked it up on google and what i found was this;

scattering of light: by small particles and molecules in the atmosphere. different from reflection, where radiation is deflected in one direction, some particles and molecules found in the atmosphere have the ability to scatter solar radiation in all directions.

i know it's kinda annoying when you are just given a google article but this is why i think it is c.   i will try to let you know if i got it right.