Which of the Following Statements Is True

Which of the following statements is true?

A) As a radioactive isotope decays,its half-life decreases over time and its rate of disintegration remains the same.
B) As a radioactive isotope decays,its half-life remains the same and its rate of disintegration remains the same.
C) As a radioactive isotope decays,its half-life remains the same and its rate of disintegration increases over time.
D) As a radioactive isotope decays,its half-life remains the same and its rate of disintegration decreases over time.
E) As a radioactive isotope decays,its half-life decreases over time and its rate of disintegration decreases over time.