`C^(14)` has life 5700 yrs. At the end of 11400 yers, the actual amount left is

Options

A. 0.5 times of original amount
B. 0.25 times of original amount
C. 0.125 times of original amount
D. None of the above

Answer

B

Explanation

Here, `T=5700yrs. T=11400yrs `
As `N/N_(0)=(1/2)^(11400//5700)=(1/2)^(2)=1/4`
`N=1/4N_(0)=0.25N_(0)=0.25` of original amount.