A sample of `U^(238) (t_(1//2)= 4.5 xx 10^(9) yrs)` is found to contains `23.8g U^(238) and 20.6g Pb^(206)`, the age of ore is

Options

A. `10^(10)` yrs
B. 5 yrs
C. `4.5 xx 10^(9)` yrs
D. `3.5 xx 10^(9)` yrs