3. After rubbing insulator X with insulator Y, insulator X repels a negatively charged
rod. Which of the following statements is true?
A.Electrons have moved from insulator X to insulator Y.
b.
Electrons have moved from insulator Y to insulator X.
c. Protons have moved from insulator X to insulator Y.
d Protons have moved from
insulator y to insulator x​