Which of the following R code generates and displays a realization of a NV(0, 2" ) random variable? O (x=runif(n=1, min=-2, max=2)) Ou=runif(1) (x=2+2*sqrt(-2*log(u))*sin(2*pi*u)) Ou=runif(2) (x=2*sqrt(-2*log(u[1]))*cos(2*pi*u[2])) O u=runif(2) (x=2+242*sqrt(-2*log(u[1]))*sin(2*pi*u[2]))