Sean is conducting an experiment with an isotope of a particular element that has a half-life of 4 hours. He begins with a sample of the isotope with a mass of 77 grams. He then measures the mass of the object every hour. What is the approximate mass of the sample after 24 hours?
A.
4,928 grams
B.
0. 0156 of a gram
C.
0. 6016 of a gram
D.
1. 2031 grams
