A certain gas diffuses from two different vessels A and B. The vessel A has a circular orifice while vessel B has a square orifice of length equal to the radius of the orifice. Calculate the ratio of the rates of diffusion of the gas from vessel A to vessel B, assuming same temperature and pressure is;
a. π
b. 7 : 22
c. 1 : 1
d. 2 : 1
