25. An acrylic sheet is rubbed against a Styrofoam plate that is hanging from a string. The acrylic sheet is then removed. A third object is then brought near the charged Styrofoam plate and it is observed that the hanging plate moves away from the object. Which of the choices below most accurately reflects the charge state of the unknown object?

A. It is uncharged B. It has the opposite charge to the Styrofoam plate C. It has the same charge as the Styrofoam plate D. Both A and B could be true E. Both A and C could be true