Average life ofa radioactive sample is 4 ms Initially the total number of nuclie is `N_(0)` A charged capacitor of capacity `20 mu f` is connected across a resistor R. The value of R such that ratio of number of nuclei remaining to the charge on capacitor remains constant with time is
A. `100 Omega`
B. `200 Omega`
C. `300 Omega`
D. `400 Omega`