The Half-Life of the Carbon Isotope C-14 Is Approximately 5,715

Multiple Choice

The half-life of the carbon isotope C-14 is approximately 5,715 years. If the amount left after 4,000 years is 1.3 g, what is the amount after 8,000 years? Round your answer to three decimal places. ​

A) 0.800 g
B) 0.628 g
C) 1.300 g
D) 0.303 g
E) 1.601 g