The correct option is C Both A and B
The major drawback of Rutherford experiment is that the orbital
revolution of the electron is not expected to be stable. According to
Rutherford's model, the electrons, while moving in their orbits, would
give up energy. This would make them slow down, gradually and move
towards the nucleus. The electrons will follow a spiral path and then
fall into the nucleus. Ultimately, the atom would collapse. But in
reality the atom is stable.