A helium ion has two protons, two neutrons and one electron. This helium ion and a proton are each sent separately through a uniform electric field. The particles move at the same velocity. Which arrow shows the path of each particle?
- Ahelium ion 1, proton 2
- Bhelium ion 2, proton 1
- Chelium ion 4, proton 5
- Dhelium ion 5, proton 4