it is too late to go out,( ),it is starting to rain .A meanwhile B besides选哪个

it is too late to go out,( ),it is starting to rain .A meanwhile B besides选哪个
it is too late to go out,( ),it is starting to rain .A meanwhile B besides选哪个

it is too late to go out,( ),it is starting to rain .A meanwhile B besides选哪个
both of two are ok for the blank,but the second 'besides' is a bit better.