Activity of 1g carbon obtained from ancient Egyptian wooden article is 3.5 count/min/g. Activity of 1 g carbon obtained from fresh wooden sample at Japan near to horishima Nagasaki is 15.5 counts/min/g. This fresh sample has 10% more activity than other fresh samples (not affected by any radiation) due to atom bomb blst during the second world war. Half life of `C""^(14)` is 5770 years. Age of Egyptian wooden article is nearly

Options

A. 2885 years
B. 5770 years
C. 11540 years
D. 12500 years

Answer

c

Explanation

`t/t""^(1//2)=2,t=2xx5770`