What relationship can be determined from the following information:
A. The radioactive isotope iodine 131 has a half-life of 8.1 days and emits 0.8 MeV (milli-electronvolts) of energy.
B. The radioactive isotope phosphorus 32 has a half-life of 14.3 days and emits 1.7 MeV of energy.
C. The radioactive isotope phosphorus 33 has a half-life of 25.5 days and emits 0.25 MeV of energy.
D. The radioactive isotope sulfur 35 has a half-life of 87.5 days and emits 0.2 MeV of energy.
