Can make it bigger. Although this size wouldn't be bad on desktop, this is an extension remember :)
Discussion
Even then, A is so much more intuitive. If anything, now it’s just the matter of decreasing the amount of clicks for the left one.
Too much opening different sections and having to go back is not the best.
Maybe hovering on different sections could already bring out the function behind it, so you don’t need to necessarily open it, unless you want to