For the reaction `A + 2B rarr` products (started with concentration taken in stoichiometric proportion), the experimentally determined rate law is :
`-(d[A])/(d t) = ksqrt([A])sqrt([B])`
The half life time of the reaction would be :
A. `(0.693)/(k)`
B. `(0.693)/(1//k)`
C. `(0.693)/(sqrt2k)`
D. not defined
