(1)Radiation Is the Emission and Propagation of Energy Through Space

(1) Radiation is the emission and propagation of energy through space or a substance in the form of waves or particles.(2) Radioactivity can be defined as the process by which certain unstable atoms or elements undergo spontaneous disintegration,or decay,in an effort to attain a more balanced nuclear state.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true;the second statement is false.
D) The first statement is false;the second statement is true.