The Half-Life of Carbon-14 Is 5,600 Years

Multiple Choice

The half-life of carbon-14 is 5,600 years.A fossil that has one-eighth the normal proportion of carbon-14 to carbon-12 is probably

A) 2,800 years old.
B) 5,600 years old.
C) 11,200 years old.
D) 16,800 years old.
E) 22,400 years old.