Half-Life (T $1 / 2$ ) Is Described as the Time Required For:
A) Half

Half-life (T $1 / 2$ ) is described as the time required for:

A) half the nuclide to leave the body.
B) half the nuclide to disappear.
C) the nuclide to decay to half its original activity.
D) the original activity to increase by one half.