Radioactive decay true or false

i need help with the following statements true or false

In alpha decay, a positron is emitted.
In beta decay, a 4He nucleus is emitted.
In gamma decay, the emmited particle is a high energy photon.

1. False, an alpha particle is 2 protons and 2 neutrons

2. False, Beta particle is an electron

3. True, except photons are not considered particles.