An Alpha Particle And ${ }_{86}^{222} \mathrm{Rn}$ Could Be Produced from the Decay of What Isotope?
A)

An alpha particle and
${ }_{86}^{222} \mathrm{Rn}$ could be produced from the decay of what isotope?

A)
${ }_{88}^{228} \mathrm{Ra}$
B)
${ }_{89}^{228} \mathrm{Ac}$
C)
${ }_{87}^{226} \mathrm{Fr}$
D)
${ }_{88}^{226} \mathrm{Ra}$