Two metal spheres are supported on insulating stands. Sphere X starts off uncharged, and sphere Y starts off positively charged. A metal rod, held using an insulating handle, is then put into contact with X and Y as shown. What charge will X have and what charge will Y have after the rod has been in contact with them?
- Acharge on X: positive; charge on Y: positive
- Bcharge on X: positive; charge on Y: uncharged
- Ccharge on X: uncharged; charge on Y: positive
- Dcharge on X: uncharged; charge on Y: uncharged