A charged shell of radius R carries a total charge Q. Given as the flux of electric field through a closed cylindrical surface of height h, radius r and with its center same as that of the shell. Here, center of the cylinder is a point on the axis of the cylinder which is equidistant from its top and bottom surfaces. Which of the following option(s) is/are correct? [& is permittivity of free space] A. Ifh8R/5 and r = 3R/5 then = 0 B. If h> 2R and r> R then = Q/Eo C. If h> 2R and r = 4R/5 then D. If h> 2R and r = 3R/5 then = Q/5&o = Q/580